KAIJU

When a Japanese fishing boat is attacked by a flash of light near Odo Island, another ship is sent to investigate only to meet the same fate, with only a few surviving. On Odo Island, a village elder blames their poor fishing on a sea monster known as "Godzilla" and recalls that in earlier times native girls were sacrificed to appease the giant sea monster. Word gets out and a helicopter arrives on the island with curious, but skeptical, reporters. Frightened natives perform a night-time ceremony to keep the monster away. However, that night, while the natives sleep, a storm arrives and something else comes with it, bringing death and destruction. And a boy sees the cause during the midst of the destruction.

The next day, witnesses arrive in Tokyo. Archeologist Kyohei Yamane suggests that investigators be sent to the island. On arrival, Yamane finds giant radioactive footprints, and a trilobite. When an alarm sounds, the villagers arm themselves with sticks and various weapons and run to the hills, only to be confronted by Godzilla, who is revealed to be an enormous dinosaurian creature. After a quick skirmish, the villagers run for safety and Godzilla heads to the ocean.

Dr. Yamane returns to Tokyo to present his findings and concludes that Godzilla was unleashed by a nuclear explosion. Some want to conceal that fact, fearing international repercussions. Others say the truth must be revealed. They prevail and Godzilla's origins are announced to the public. Ships are sent with depth charges to kill the monster. When that fails, Godzilla appears again, frightening patrons on a party boat, and causing nationwide panic. Officials appeal to Dr. Yamane for some way to kill the monster, but Yamane wants him kept alive and studied.

Meanwhile, Emiko, Yamane's daughter, decides to break off her arranged engagement to Yamane's colleague, Daisuke Serizawa, because of her love for Hideto Ogata, a salvage ship captain. Before she can do that, Serizawa tells her about his secret experiment. He gives a small demonstration, using a fish tank in the lab. Shocked, Emiko is sworn to secrecy and never gets a chance to break off the engagement. That night Godzilla climbs from Tokyo Bay and attacks the city. Though the attack is over quickly, there is much death and destruction. The next morning, the army constructs a line of 40-meter electrical towers along the coast of Tokyo that will send 50,000 volts of electricity through Godzilla, should he appear again. Civilians are evacuated from the city and put into bomb shelters. As night falls, Godzilla does indeed attack again. He easily breaks through the electric fence, melting the wires with his atomic breath. A bombardment of shells from the army tanks has no effect. Godzilla continues his rampage until much of the city is destroyed and thousands of civilians are dead or wounded. Godzilla descends unscathed into Tokyo Bay, despite a squadron of fighter jets' last-ditch attack.

The next morning finds Tokyo in ruins. Hospitals overflow with victims, including some with radiation poisoning. Emiko witnesses the devastation and tells Ogata about Serizawa's secret Oxygen Destroyer, a device that disintegrates oxygen atoms and organisms die of asphixiation. Thus, a new energy source he accidentally created. She hopes together they can persuade Serizawa to use it to stop Godzilla. When Serizawa realizes Emiko betrays his secret, he refuses, and Ogata and Serizawa fight and Ogata receives a minor head wound. As Emiko treats Ogata's wound, Serizawa apologizes, but he refuses to use the weapon on Godzilla, citing the public bedlam his weapon could cause. Then a newscast shows the devastation Godzilla has caused. Choirs of children are shown singing a hymn. Finally realizing this, Serizawa decides he will use the weapon only one time and then its secret must be destroyed for the good of humanity. He then burns all his papers and research. Emiko breaks down and cries when she sees this, as she understands that Serizawa is sacrificing his life's work and himself to stop Godzilla.

A navy ship takes Ogata and Serizawa to plant the device in Tokyo Bay. They don diving gear and descend into the water, where they find Godzilla at rest. Ogata returns to the surface as Serizawa activates the device. Serizawa watches as Godzilla dies then tells Ogata to be with Emiko. He then cuts his own oxygen cord, sacrificing himself so his knowledge of the device cannot be used to harm mankind. A dying Godzilla surfaces, lets out a final roar, and sinks to the bottom, disintegrating until he is nothing but bones, and eventually, nothing.

Although the monster is gone, those aboard ship are still grim. They do not know if the death of Godzilla is the end or the beginning of an apocalyptic era. Godzilla's death has come at a terrible price and Dr. Yamane believes that if mankind continues to test nuclear weapons, another Godzilla may appear.

Two pilots named Tsukioka and Kobayashi are hunting for schools of fish for a tuna cannery company in Osaka. Kobayashi's plane malfunctions and is forced to land near Iwato Island, an uninhabited strip of rocks formed by volcanic eruptions. Tsukioka then looks for Kobayashi and finds him safe, with only a wrist sprain. While talking, the two men hear some strange sounds and find two monsters fighting. Tsukioka immediately recognizes one of the monsters to be Godzilla. The two monsters then fall off a cliff, into the ocean.

Tsukioka and Kobayashi report to the authorities in Osaka, and find out that the other monster Godzilla was fighting is Anguirus. A group of scientists with the two pilots research Anguirus in a book written by a Polish scientist. Godzilla and Anguirus lived around the same time millions of years ago, and there was an intense rivalry between the two monsters.

Dr. Kyohei Yamane, who experienced Godzilla's attack in 1954, is also present at the meeting, and shows a film of the original Godzilla attacking Tokyo. He confirms that this Godzilla is a second member of the same species, and that it and Anguirus were probably brought back to life by the same hydrogen bomb tests that awoke the original Godzilla. Yamane states that there is no way to kill Godzilla, and that Dr. Daisuke Serizawa, the inventor of the Oxygen Destroyer, had died and burned the formula. Yamane, though, suggests that the military should use flares on Godzilla to attract the monster away from the shore. Godzilla becomes angry when he sees lights because the hydrogen bomb's bright explosion had awakened and mutated him.

One day unexpectedly, Godzilla shows up on the shore of Osaka. Jets are sent to shoot flares from their planes to lead Godzilla away from the shore. Godzilla sees the flames, and, as Yamane predicted, starts to walk away.

Meanwhile, a prison truck transports dangerous criminals to another part of the country. All of the criminals, using body language, decided that this would be a great opportunity to escape from prison. The prisoners beat up the two policemen guarding the back door of the truck, and run away. A few of them find a gasoline truck, and use it to escape. The truck crashes into an industrial building and starts a massive fire.

The fire attracts Godzilla to the shore of Osaka again. A few minutes later, Anguirus swims to shore and attacks Godzilla. The two creatures fight an intense battle, while destroying several buildings, including the tuna cannery that Tsukioka and Kobayashi work for. Godzilla finally bites Anguirus's neck, and throws him on a moat near Osaka Castle. Godzilla then fires his atomic ray, and burns Anguirus to death.

Tsukioka and Kobayashi are transferred to a Hokkaido plant. During a company party, Tsukioka and Kobayashi are notified that Godzilla destroyed one of the company fishing boats. The military, and Tsukioka begin a massive search for Godzilla. Tsukioka spots Godzilla swimming to the shore of a small, icy island. He notifies the cannery, and Kobayashi takes off in his plane to switch shifts with Tsukioka.

Kobayashi dives his plane towards Godzilla to distract him from walking back into the ocean. Tsukioka then transferred to the air force, travels on a jet with an old college friend. They drop bombs on Godzilla but are unsuccessful. Godzilla then wades towards shore. Koboyashi dives towards Godzilla again but Godzilla fires his atomic ray on Kobayashi's plane. The plane then crashes on an icy mountain, killing Kobayashi.

Tsukioka grieves but then notices that the military can shoot missiles at the mountain, and bury Godzilla in an avalanche. The jets fire the missiles, and bury Godzilla in snow to his waist.

The jets return to base to reload, and Tsukioka is authorized to fly in his own jet. The jets return to the icy island, and shoot missiles at the mountain, burying Godzilla to his neck. Tsukioka then shoots his missiles burying Godzilla completely. Tsukioka looks to the sky, and says, "Kobayashi, we buried Godzilla for you."

Mr. Tako, head of Pacific Pharmaceuticals, is frustrated with the television shows his company is sponsoring and wants something to boost his ratings. When a doctor tells Tako about a giant monster he discovered on the small Faro Island, Tako believes that it would be a brilliant idea to use the monster to gain publicity. Tako immediately sends two men, Sakurai and Kinsaburo, to find and bring back the monster from Faro.

Meanwhile, the American submarine Seahawk gets caught in an iceberg. Unfortunately, this is the same iceberg that the mutant dinosaur Godzilla was trapped in by the Japanese Self-Defense Forces back in 1955, and the submarine is destroyed by the monster. As an American rescue helicopter circles the iceberg, Godzilla breaks out and heads towards a nearby Arctic military base, attacking it. The base itself is ineffective against Godzilla. He continues moving inland, razing the base to the ground, and sends the tank armory up in flames. Godzilla's appearance is all over the press, making Tako furious.

On Faro Island, a giant octopus known as Oodako attacks the native village. The mysterious Faro monster is then revealed to be the giant gorilla, King Kong and he arrives and defeats the octopus. King Kong then drinks some red berry juice, becomes intoxicated, and then falls asleep. Sakurai and Kinsaburo place Kong on a large raft and begin to transport him back to Japan. Back at Pacific Pharmaceuticals, Tako is finally glad because Kong is now all over the press instead of Godzilla. Mr. Tako arrives on the ship transporting Kong, but a JSDF ship stops them and orders them to return Kong to Faro Island. Godzilla had just come ashore in Japan and destroyed a train, and the JSDF doesn't want another monster entering Japan. Unfortunately, during all this, Kong wakes up from his drunken state and breaks free from the raft. Reaching the mainland, Kong meets up with Godzilla in a valley. Tako, Sakurai, and Kinsaburo have difficulty avoiding the JSDF to watch the fight. Eventually they find a spot. Kong throws some large rocks at Godzilla, but Godzilla shoots his atomic breath at Kong's chest, forcing the giant ape to retreat.

The JSDF desperately tries everything to stop Godzilla from entering Tokyo. In a fielded area outside the city, they dig a large pit laden with explosives and lure Godzilla into it, but Godzilla is unharmed. They next string up a barrier of power lines around the city filled with a 1,000,000 volts of electricity (300,000 volts had been tried in the first film, but failed to turn the monster back). The electricity is too much for Godzilla, who then moves away from the city towards the Mt. Fuji area. Later at night, Kong approaches Tokyo. He tears through the power lines, feeding off the electricity which seems to make him stronger. Kong then attacks Tokyo and holds Fumiko, a woman from a train and Sakurai's sister, hostage. The JSDF explodes capsules full of the berry juice from Faro Island and knock out Kong, while Sakurai rescues Fumiko. The JSDF then decides to transport Kong via balloons to Godzilla, in hope that they will fight each other to their deaths.

The next morning, King Kong is dumbo-dropped onto the summit of Mt. Fuji from the balloon air-lift, meets up with Godzilla, and the two begin to fight. Godzilla has the advantage at first, eventually knocking Kong down with a vicious drop kick, and battering the gorilla unconscious with powerful tail attacks to his forehead. When Godzilla tries to kill Kong with his atomic breath, an electrical storm arrives and revives Kong, giving him the power of an electric grasp. The two begin to fight again, with the revitalized Kong swinging Godzilla around by his tail, shoving a tree into Godzilla's mouth, and judo tossing him over his shoulder. The brawl between the two monsters continues all the way down to the coastline. Eventually the monsters tear through Atami Castle and Kong drags Godzilla into the Pacific Ocean. After an underwater battle, only King Kong emerges from the water and begins to slowly swim back home to Faro Island. As Kong swims home, onlookers aren't sure if Godzilla survived the underwater fight, but speculate that it was possible.

News reporter Ichiro Sakai and photographer Junko Nakanishi take pictures of the wreckage caused by a typhoon, uncovering a large scale in the debris. Later that day a giant egg is discovered on the shore. The local villagers salvage it, and scientists come to study the egg.

While Sakai and Junko try to ask Professor Miura, one of the scientists, questions about the egg, an entrepreneur of Happy Enterprises named Kumayama scurries the scientists off and explains that he bought the egg from the local villagers. Instead of letting scientists study the egg, Kumayama wants to make it into a large tourist attraction. Sakai, Junko, and Professor Miura are disgusted and believe that Kumayama has no right to keep the egg.

While the three are discussing the egg at a hotel, they discover Kumayama checking in. Sakai wonders if somebody else may be working with Kumayama and investigates the matter. Kumayama meets with Jiro Torahata, the head of Happy Enterprises. As the two are discussing the billion-dollar tourist attraction the egg represents, two tiny twin girls known as the Shobijin, interrupt them. The Shobijin explain that they are from Infant Island and that the egg belongs to their god Mothra, who lives there. Torahata and Kumayama ignore the girls' pleas and try to capture them. The Shobijin escape the room and meet with Sakai, Junko, and Professor Miura outside the hotel. The girls beg them to bring the egg back too and the three promise to try as hard as they can to bring the egg back to Infant Island. The girls explain that if the egg is not returned, a larva will hatch and will cause destruction to its surroundings as it searches for food. When confronted by Sakai, Junko, and Miura, Kumayama offers to buy the Shobijin, disgusting Junko, Miura, and Sakai.

The Shobijin leave even though they could not get the egg back and thank Sakai, Junko, and Miura for their kindness. Sakai tries to write editorials but they fail due to lack of public interest. When the scale is found to be radioactive, the three test for radioactivity in an industrial area where it was found. The mutant dinosaur Godzilla suddenly emerges out of Kurada Beach, where he had been blown ashore by the hurricane and buried under mud, and begins to attack Nagoya.

The editor of Sakai's newspaper believes that the military cannot do anything against Godzilla and discusses it with Sakai and Junko. Jiro, another reporter who loves to eat eggs, walks in and suggests that Mothra might be able to defeat Godzilla. Sakai and Junko are skeptical that the Shobijin would agree because atomic testing had destroyed most of their island, and they had failed to return the egg to them.

The two go to Infant Island anyway with Professor Miura. They are captured by the local villagers and are brought to the tribe’s chief. The three ask for assistance but, as expected, are refused because of the atomic testing and Japan's failure to return the egg.

The Shobijin are heard singing and everyone walks towards them. Sakai, Junko, and Miura ask the Shobijin for Mothra's assistance but they are also turned down. Junko then pleads to all the villagers that not everyone from Japan should be accused for what happened to their island. Godzilla is killing everyone and refusing their country assistance is wrong. Sakai then adds that "we're all human" and that everyone is connected and must help each other. Mothra's screech is soon heard and the Shobijin ask everyone to follow them. They convince Mothra to help Japan and the people that live in it, but the monstrous insect is old and weak. Even if Mothra defeats Godzilla, she will die.

The next day, Kumayama barges into Torahata's room and demands Torahata give him his money back that Torahata had recently swindled from Kumayama. They fight and eventually, Torahata is defeated by being punched in the mouth, and is bleeding. Kumayama crawls into Torahata's money cabinet and begins to steal the money from it. Torahata wakes up and sees Godzilla approaching the hotel. He then grabs a gun and shoots Kumayama in the head, killing him. Torahata is killed while escaping with his money when Godzilla destroys the hotel.

Godzilla walks towards the egg and tries to destroy it until Mothra shows up. The two fight a tough battle where Mothra seems to have the upper hand. While on the ground, Godzilla fires his atomic breath into Mothra's face and mortally injures her. Mothra dies with her wing resting on top of her egg while Godzilla walks away. The Shobijin then explain to Sakai, Junko, and Miura that the egg can be hatched today and begin to sing.

Meanwhile, the military tries to fight Godzilla by electrocuting him with "artificial lighting" but failed. Godzilla then melts the tanks with his atomic breath. The Shobijin continue singing and Mothra's egg finally hatches with not one, but two Mothra larvae. The larvae follow Godzilla to Iwa Island and use their silk spray on Godzilla to trap him, sending him into the sea. The Mothra larvae and the Shobijin celebrate and return to Infant Island.

Police Detective Shindo (Yosuke Natsuki) is assigned to guard Princess Selina Salno of Selgina (Akiko Wakabayashi) during the Princess' visit to Japan, due to a suspected assassination plot. Although Shindo is smitten with Selina's photograph, her plane never makes it to Japan, as it is destroyed by a bomb en route. At exactly the same time a meteorite shower draws the attention of Professor Murai (Hiroshi Koizumi), who along with his team of scientists strikes out into the wilderness to examine the largest of the meteors, which has magnetic properties.

To Shindo's surprise, the supposedly deceased Selina turns up in Japan, without her royal garb (including the golden bracelet which proves she is heir to the throne of Selgina), claiming to be from the planet Mars, and preaching to skeptical crowds of forthcoming disaster. To their surprise however, her prophecies begin coming true. First she predicts Rodan, thought dead in the eruption of Mt. Aso, will emerge from Aso's crater. Subsequently, none other than Godzilla will arise from the sea and destroy a ship. Both of these events transpire.

In the meantime, Selina's uncle (Shin Otomo), who was behind the assassination attempt, learns of her survival and sends his best assassin Malness (Hisaya Ito) to Japan to dispatch the Princess and steal the golden bracelet. Malness and his henchmen are stopped by Shindo, who was warned of their attempt by the Shobijin (Emi and Yumi Ito), who were in Japan appearing on a television show. The Shobijin had been scheduled to return to Infant Island aboard the ship sunk by Godzilla, but opted not to go after overhearing Selina's prophecy. A further attempt by the assassins is thwarted when both Godzilla and Rodan attack the city and engage in battle, forcing everyone to flee.

Convinced that Selina is insane, Shindo takes the Princess to see a renowned psychiatrist, Dr. Tsukamoto (Takashi Shimura), in the hopes of curing her. However, Tsukamoto can find nothing wrong with her, mentally or physically. He concludes she must therefore truly be possessed by a Martian as she claims. As if emboldened by the doctor's diagnosis, Selina reveals her final prophecy—that Mars' once thriving civilization was destroyed by an evil, golden three-headed dragon named King Ghidorah, and furthermore that Ghidorah himself has already arrived on Earth. No sooner has she revealed this than Professor Murai and his colleagues at the meteor crash site receive a nasty surprise—the "meteor" is actually an egg, which hatches into the fearsome King Ghidorah. Ghidorah begins razing the countryside.

To combat the combined threats of the three monsters, the Japanese government enlists the aide of the Shobijin to summon Mothra. Upon arriving on the Japanese mainland, Mothra attempts to persuade the quarreling Godzilla and Rodan to team up against the evil alien (which is translated to the humans by the Shobijin) but both refuse, with Godzilla stating they have no reason to save mankind as both he and Rodan "have always had trouble with men and men hate them" which Rodan agrees too. Despite Mothra stating that Earth belongs to them as well and that it is their duty to defend it, Godzilla and Rodan still refuse (with Godzilla apparently swearing at Mothra) and the pair refuse to forgive each other, wanting to continue their fight. Unable to convince them and despite being vastly overpowered, Mothra calls the pair of them "bullheaded" and resolves to fight Ghidorah by herself. Mothra engages Ghidorah and is continually blasted by his gravity beams. Luckily for Mothra, Godzilla and Rodan; impressed by her courage and selflessness; arrive to help and a titanic battle against Ghidorah begins. Meanwhile, Shindo and Dr. Tsukamoto are forced to protect Princess Selina as Malness and his men converge on Tsukamoto's clinic; they fend the killers off and escape into the mountains as the dueling monsters draw closer, so they can watch the battle from a safe distance.

The assassins attempt to follow, but a stray blast from Ghidorah buries their car in an avalanche. Only Malness remains uninjured enough to continue. He attempts to snipe the Princess from an elevated position, but only injures her. In her pain, she regains her memory and is no longer possessed by the Martian. Before Malness can take another shot, another stray blast from Ghidorah buries the assassin under a second avalanche. With the heroes thus saved from the human menace, they gather at a safe distance to watch the battle between earth's monsters and Ghidorah. After now gaining a clear advantage over Ghidorah, the three monsters coordinate their attack; Godzilla grabs hold of Ghidorah's tails while Mothra (riding on Rodan's back) sprays the three-headed dragon with her silk. Finally, Godzilla throws the alien beast off the cliff and the battered dragon flies off, back into outer space.

As Mothra and the Shobijin return to Infant Island while Godzilla and Rodan go their separate ways. Selina, having retained the memories of her time with Shindo, bids farewell to her guardian as she meets her bodyguards at the airport to return home.

In the late 1960s, a two-man spacecraft, crewed by a Japanese and American (Fuji and Glenn), approaches Jupiter's orbit to explore the newly discovered Planet X. The planet maintains a position directly behind Jupiter, leaving its surface in twilight, with just enough light to make it possible to navigate its surface.

After landing and disembarking, one of the astronauts and the ship vanishes, leaving the other to wonder where they have gone. Suddenly, a flat voice comes over the communications link and instructs the lone astronaut down into subterranean corridors to the office of the Controller of Planet X, where he finds his shipmate.

The spacecraft is safe, the controller assures them and indicates that their location is about to be attacked. The astronauts recognize the attacking monster is King Ghidorah, the three-headed space dragon. The astronauts lose contact with the Controller, but afterwards they are assured that Ghidorah, known to the Xians as Monster Zero, is gone.

The Controller asks for Earth's help: they want to capture Godzilla and Rodan, known to the Xians as Monster Zero-One and Monster Zero-Two. In return, Planet X will gift humanity with a wonder drug that can cure all diseases. The astronauts agree to return home with the proposal. As they lift off, they say on the radio to the Controller, "We're glad we found friends on Planet X."

Meanwhile, Fuji's sister's boyfriend, Tetsuo, has invented a personal alarm he thinks women could use if they're attacked. It creates an extremely loud noise that can be heard for a long distance. Tetsuo wonders, though, why no one is interested in buying it. Eventually, a Miss Namikawa makes an offer to buy the alarm as an educational device, though she keeps putting Tetsuo off on completing the deal. In truth, her boss wants the device and the plans destroyed.

Fuji and Glenn tell their superiors about the offer from Planet X. Scientists begin searching for Godzilla and Rodan. The Controller of Planet X suddenly makes an appearance on Earth, and both Glenn, who is dating Miss Namikawa and Fuji both become suspicious of Planet X. The Controller apologizes for his unannounced presence and offers to help locate the two monsters. Two Planet X spacecraft rapidly deploy to capture the two monsters.

Glenn, Fuji and Dr. Sakurai are invited to accompany the Controller back to Planet X, a trip that takes only a few hours; the Controller says that soon they'll be able to travel at the speed of light. When they reach Planet X, there is an immediate attack by Ghidorah, and the two monsters from Earth are released to battle him. Ghidorah is driven off and the Controller is extremely happy. He presents the astronauts with a box he says contains the formula for the miracle drug. He also gives the three men duplicate of their spaceship so they can fly home.

Back home the box is taken to a special meeting and in it is found a reel-to-reel tape. It is loaded to play, but when the speakers remain silent for a long period, some wonder if the systems are compatible. Finally, after a beep a voice states, "I am the controller of Planet X. To the people of the Earth. I command that you obey the following orders..." It is an ultimatum to surrender to Planet X or be destroyed by all three monsters.

The Xians soon arrive and destroy the gift spacecraft. They also threaten to release King Ghidorah, Godzilla and Rodan. Overly confident, the Xians show the world how they control the monsters through magnetic waves. The Earth scientists know they can exploit this information and work rapidly to find a way to disrupt the waves. Meanwhile, Earth's armies fight the three monsters with conventional weapons as they destroy much of Japan.

Tetsuo, is unhappy his device is not being used, and he is unable to get Miss Namikawa to tell him what's happening. He decides to follow her, but is captured by Planet X soldiers. Glenn eventually discovers Miss Namikawa is from Planet X and all their women are virtually identical. Fearing what he knows, the Xians arrest him and put in the same cell as Tetsuo. However, this proves to be their undoing as he and Tetsuo begin to cooperate. Before she is disintegrated by a soldier, Namikawa gives Glenn a letter in which she told him the weakness of the people of Planet X: the sound from Tetsuo's alarm. Tetsuo, who still has the prototype, sets it off. It paralyzes the Planet X soldiers, enabling Glenn and Tetsuo to escape.

They reach the space center scientists and explain about the alarm. Arrangements are made to broadcast it on all radio and television stations, but only when the magnetic disruption devices are deployed.

The three monsters are no longer under Planet X control, as their spacecraft explode as their crews try to escape the debilitating alarm noise. The invaders withdraw from the Earth. Meanwhile, Godzilla and Rodan attacks Ghidorah, forcing all three to fall into the sea. Ghidorah emerges and retreats to outer space, but Godzilla and Rodan never resurface, leading the humans to wonder whether King Ghidorah defeated them.

Glenn and Fuji are to be sent to Planet X again as ambassadors to seek peaceful relations.

After Yata (Toru Ibuki) is lost at sea, his brother Ryota (Toru Watanabe) steals a yacht with his two friends and a bank robber, the crew runs afoul of the giant shrimp Ebirah, and washes up on the shore of an island, where a terrorist organization manufactures heavy water for their purposes, as well as a chemical that keeps Ebirah at bay. The organization, known as the Red Bamboo, has enslaved natives from Infant Island to help them, but the natives hope to awaken Mothra to rescue them.

In their efforts to avoid capture, Ryota and his friends, aided by a beautiful native girl, stumble across Godzilla sleeping within a cliffside cavern. The group devises a plan to defeat the Red Bamboo and escape from the island. In the process, they wake Godzilla using a lightning rod. Godzilla fights Ebirah, but the giant crustacean escapes. Godzilla is then attacked by a giant condor and a squadron of Red Bamboo fighter jets, but destroys them.

The humans retrieve the missing Yata, free the enslaved natives and Godzilla begins to destroy the base. Godzilla smashes a tower that has a self destruct button that makes the island unstable. Godzilla fights Ebirah and defeats it, ripping off both Ebirah's claws and causing it to retreat into the sea. The natives summon Mothra to save everyone, however, Godzilla challenges Mothra when she gets to the island. Mothra manages to push Godzilla away and carry the people off. Godzilla escapes the island just before it explodes.

A team of scientists are trying to perfect a weather-controlling system. Their efforts are hampered by the arrival of a nosy reporter and by the sudden presence of 2-meter tall giant praying mantises. The first test of the weather control system goes awry when the remote control for a radioactive balloon is jammed by an unexplained signal coming from the center of the island. The balloon detonates prematurely, creating a radioactive storm that causes the giant mantises to grow to enormous sizes. Investigating the mantises, which are named Kamacuras (Gimantis in the English-dubbed version), the scientists find the monstrous insects digging an egg out from under a pile of earth. The egg hatches, revealing a baby Godzilla. The scientists realize that the baby's telepathic cries for help were the cause of the interference that ruined their experiment. Shortly afterwards, Godzilla himself arrives on the island, demolishing the scientist's base as he rushes to defend the baby. Godzilla kills two of the Kamacuras during the battle while one manages to fly away to safety, Godzilla then adopts the baby.

The baby Godzilla, named Minilla, quickly grows to about half the size of his father, and Godzilla instructs him on the important monster skills of roaring and using his atomic ray. At first, Minilla has difficulty producing anything more than atomic smoke rings, but Godzilla discovers that stressful conditions (i.e. stomping on his tail,) or motivation produces a true radioactive blast. Minilla comes to the aid of Reiko when she is attacked by a Kamacuras, but inadvertently awakens Kumonga (Spiga in the English-dubbed version), a giant spider that was sleeping in a valley. Kumonga attacks the caves where the scientists are hiding, and Minilla stumbles into the fray.

Kumonga traps Minilla and the final Kamacuras with his webbing, but as Kumonga begins to feed on the deceased Kamacuras, Godzilla arrives to save the day. Godzilla saves his son and they work together to defeat Kumonga by using their atomic rays on the giant spider. The scientists finally use their perfected weather altering device on the island and the once tropical island becomes buried in snow and ice. As the scientists are saved by an American submarine, Godzilla and Minilla begin to hibernate as they wait for the island to become tropical again.

At the close of the 20th century, all of the Earth's kaiju have been collected and confined in an area known as Monster Island, by the United Nations Science Committee, in the Ogasawara island chain. A special control center is constructed underneath the island to ensure the monsters stay secure, and serve as a research facility to study them.

When communications with Monster Island are suddenly and mysteriously severed, and all of the monsters begin attacking world capitals, Dr. Yoshida of the UNSC orders Captain Yamabe and the crew of his spaceship, Moonlight SY-3, to investigate Ogasawara. There, they discover that the scientists, led by Dr. Otani, have become mind-controlled slaves of a feminine alien race identifying themselves as the Kilaaks, who reveal that they are in control of the monsters. Their leader demands that the human race surrender, or face total annihilation.

Godzilla attacks New York City, Rodan invades Moscow, Mothra lays waste to Beijing, Gorosaurus destroys Paris, and Manda attacks London, which is set in to motion to take attention away from Japan, so the aliens can establish an underground stronghold near Mt. Fuji in Japan. The Kilaaks then turn their next major attack on Tokyo, and without serious opposition, become arrogant in their aims, until the UNSC discover the Kilaaks have switched to broadcasting the control signals from their base under the Moon's surface. In a desperate battle, the crew of the SY-3 destroy the Kilaak's lunar outpost and return the alien control system to Earth.

With all of the monsters under the control of the UNSC, the Kilaaks unleash their hidden weapon, King Ghidorah. The three-headed space monster is dispatched to protect the alien stronghold at Mt. Fuji, and battles Godzilla, Minilla, Mothra, Rodan, Gorosaurus, Anguirus, Kumonga, Manda, Baragon, and Varan. While seemingly invincible, King Ghidorah is eventually overpowered by the combined strength of the Earth monsters and is killed. Refusing to admit defeat, the Kilaaks produce their trump card, a burning monster they call the Fire Dragon, which begins to torch cities and destroys the control center on Ogasawara. Suddenly, Godzilla attacks and destroys the Kilaak's underground base, revealing the Earth's monsters instinctively know who their enemies are. Captain Yamabe then pursues the Fire Dragon in the SY-3, and narrowly achieves victory for the human race. The Fire Dragon is revealed to be a flaming Kilaak saucer and is destroyed. Godzilla and the other monsters are eventually returned to Monster Island to live in peace.

Ichiro Miki (Tomonori Yazaki) is a highly imaginative but lonely latchkey kid growing up in urban (and at that time, polluted) Tokyo. Every day he comes home to his family's empty apartment. His only friends are a toymaker named Shinpei Inami (Eisei Amamoto) and a young girl named Sachiko (Hidemi Ito). Every day after school, Ichiro is tormented by a gang of bullies led by a child named Sancho (Junichi Ito), whom Ichiro has nicknamed "Gabara." To escape his loneliness, Ichiro sleeps and dreams about visiting Monster Island. During his visit he witnesses Godzilla battle three Kamacuras and Ebirah, a giant sea monster. Ichiro is then chased by a rogue Kamacuras and falls into a deep cave, but luckily avoids being caught by Kamacuras. Shortly afterwards, Ichiro is rescued from the cave by Godzilla's Son, Minilla. Ichiro quickly learns that Minilla has bully problems too, as he is bullied by a monstrous ogre known as Gabara.

Ichiro is then awoken by Shinpei who informs him that his mother must work late, again. Down on his luck Ichiro goes out to play, but is then frightened by the bullies and finds and explores an abandoned factory. After finding some souvenirs (tubes, a headset, and a wallet with someone's license), Ichiro leaves the factory after hearing some sirens close by. After Ichiro leaves, two Bank Robbers (played by Sachio Sakai and Kazuo Suzuki) who were hiding out in the factory learn that Ichiro has found one of their drivers licenses and follow him in order to kidnap him.

Later, Ichiro dreams again and reunites with Minilla. Together they both watch as Godzilla fights Ebirah, Kumonga, and some invading Jets. Then in the middle of Godzilla's fights, Gabara appears and Minilla is forced to battle him, and after a short and one-sided battle Minilla runs away in fear. Godzilla returns to train Minilla how to fight and use his own atomic ray. However, Ichiro is woken up this time by the Bank Robbers and is taken hostage by them for taking their stuff and as a means of protection from the authorities.

Out of fear and being watched by the thieves, Ichiro calls for Minilla's help and falls asleep again where he witnesses Minilla being beaten up by Gabara again. Finally, Ichiro helps Minilla fight back at Gabara and eventually Minilla wins, catapulting the bully through the air by a seesaw-like log. Godzilla, who was in the area watching comes to congratulate his son for his victory, but is ambushed by a vengeful Gabara. Luckily after a short brawl, Godzilla beats down Gabara and sends the bully into retreat, never to bother Minilla again. Now from his experiences in his dreams, Ichiro learns how to face his fears and fight back, gaining the courage to outwit the thieves just in time for the police to arrive and arrest them. The next day, Ichiro stands up to Sancho and his gang and wins, regaining his pride and confidence in the process. He also gains their friendship when he plays a prank on a billboard painter.

The microscopic alien lifeform Hedorah feeds on Earth's pollution and grows into a poisonous, acid-secreting sea monster. After it sinks an oil tanker and attacks Dr. Yano and his young son Ken, scarring them both, Hedorah's toxic existence is revealed to the public. Ken has visions of Godzilla fighting the world's pollution, and insists Godzilla will come to mankind's aid against Hedorah.

Hedorah metamorphoses into an amphibian form, allowing it to move onto land to feed on additional sources of pollution. Hedorah is confronted by Godzilla. Hedorah is easily overpowered by Godzilla and retreats into the sea. It returns shortly thereafter in a flying saucer shape demonstrating new, even deadlier forms which it can switch between at will.

Thousands of people die in Hedorah's raids and even Godzilla is overwhelmed by Hedorah's poisonous emissions. As hope sinks, a party is thrown on Mt. Fuji to celebrate one last day of life before mankind succumbs to Hedorah. Ken realizes that Godzilla and Hedorah have come to Mt. Fuji as well for a final confrontation.

Dr. Yano has determined that drying out Hedorah's body may destroy the otherwise unkillable monster. The JSDF swiftly constructs two gigantic electrodes for this purpose, but their power is cut off by Godzilla and Hedorah's violent battle. Godzilla energizes the electrodes with his atomic ray, dehydrating Hedorah's outer body. Hedorah sheds this outer body and takes flight to escape, but Godzilla propels himself through the air with his atomic ray to give chase. Godzilla drags Hedorah back to the electrodes and continues to dehydrate it until Hedorah dies. Godzilla tears apart Hedorah's dried-out body and dehydrates the peices until nothing remains but dust.

With Ken calling after him, Godzilla returns to the sea, but not before glaring threateningly at the surviving humanity whose pollution spawned Hedorah. The question arises: Could it happen again?

Giant insectoid aliens from a dying planet in "Space Hunter Nebula-M" plot to colonize the Earth. The aliens assume the forms of dead humans and work as the development staff of the peace-themed theme park, World Children's Land, the centerpiece of which is "Godzilla Tower". The Nebula-M aliens plan to use the space monsters Gigan and King Ghidorah, guided by two "Action Signal Tapes," to wipe out human civilization.

Manga artist Gengo Kotaka stumbles onto their plan after being hired as a concept artist for the park. When Gengo and his friends accidentally obtain one of the Action Signal Tapes and play it, Godzilla and Anguirus hear the signal and realize something is amiss. Godzilla sends Anguirus to investigate. When Anguirus approaches Tokyo, the Japan Self Defense Forces, misunderstanding the monster's intentions, drives him away.

Anguirus reports back to Monster Island, and Godzilla follows him back to Japan to save the Earth from Gigan and King Ghidorah. The aliens attempt to kill Godzilla with a lethal laser cannon hidden inside Godzilla Tower, but Gengo and his companions destroy the tower along with the aliens. After a lengthy fight, Godzilla and Anguirus force Gigan and King Ghidorah back into space and then Godzilla and Anguirus swim back to Monster Island, but not before Godzilla turns around and gives a roar of triumph.

For years, Seatopia, the undersea civilization, has been heavily affected by nuclear testing conducted by the surface nations of the world. Upset by this, they plan to unleash their civilization's god, Megalon, to the surface to destroy the world out of vengeance.

On the surface, an inventor named Goro Ibuki, his nephew Rokuro and their friend Hiroshi Jinkawa are off on an outing near a lake when Seatopia makes itself known to the Earth by drying up the lake the trio was relaxing nearby and using it as a base of operation (unknown to our heroes.) As they return home they are ambushed by agents of Seatopia who are trying to steal Jet Jaguar, a humanoid robot under construction by the trio of inventors. However the Agents' first attempt is botched and they are forced to flee to safety.

Some time later, Jet Jaguar is completed but the trio of inventors are knocked unconscious by the returning seatopian agents. The agents's plan is to use Jet Jaguar to guide and direct Megalon to destroy whatever city Seatopia commands. Goro and Rokuro are sent to be killed, while Hiroshi is taken hostage. Megalon is finally released to the surface while Jet Jaguar is put under the control of the Seatopians and is used to guide Megalon to attack Tokyo with the Japan Self Defense Forces failing to defeat the monster. Eventually, the trio of heroes manage to escape their situation with the Seatopians and reunite to devise a plan to send Jet Jaguar to get Godzilla's help using Jet Jaguar's secondary control system.

After uniting with Japan's Defense Force, Goro manages to regain control of Jet Jaguar and sends the robot to Monster Island to bring Godzilla to fight Megalon. Without a guide to control its actions, Megalon flails around relentlessly and aimlessly fighting with the Defense Force and destroying the outskirts of Tokyo. The Seatopians learn of Jet Jaguar's turn and thus send out a distress call to the Nebula M aliens (from the previous film) to send Gigan to assist them.

As Godzilla journeys to fight Megalon, Jet Jaguar programs into a safeguard mode and grows to gigantic proportions to face Megalon himself until Godzilla arrives. The battle is roughly at a standstill between robot and monster, until Gigan arrives and both Megalon and Gigan double team Jet Jaguar. Godzilla finally arrives to assist Jet Jaguar and the odds become evened. After a long and brutal fight, Gigan and Megalon both retreat and Godzilla and Jet Jaguar shake hands on a job well done. Godzilla returns to Monster Island, and Jet Jaguar returns to his previous, human-sized state and reunites with his inventors.

In Okinawa an ancient statue is unearthed with a prophecy inscribed on it: When a black mountain appears in the sky and the sun rises in the West, a monster will arise to destroy the world. The statue of the mythical monster King Caesar, protector of Okinawa, is vital should the prophecy come true.

Before long, the signs appear: a giant black mountain shaped cloud is seen and a mirage creates the illusion of a Western sunrise. Godzilla (or so it seems) emerges from Mount Fuji and begins a destructive rampage. Former ally Anguirus confronts "Godzilla", only to be violently defeated when Godzilla breaks Anguirus' jaw.

Another Godzilla shows up to battle the rampaging Godzilla and reveals it to be an impostor. It is Mechagodzilla, a robot created by ape aliens of the Third Planet from the Black Hole to destroy the real Godzilla and conquer Earth. Mecha-Godzilla unleashes his full arsenal and a wounded Godzilla collapses into the sea. Too damaged to continue the attack, Mecha-Godzilla retreats for repairs. Returning to Monster Island, Godzilla is repeatedly energized by mysterious bolts of lightning.

His repairs completed, Mecha-Godzilla is unleashed to destroy King Caesar, but Godzilla comes to the rescue. After a bloody battle between the three titans, Godzilla generates a magnetic field against Mecha-Godzilla, dragging the metal robot within reach. Godzilla twists Mecha-Godzilla's head off and the robot's body explodes. The aliens' base explodes, and both King Caesar and Godzilla return home.

Continuing after the end of Godzilla vs. Mechagodzilla, Interpol agents, led by Inspector Kusaka, search for the wreck of Mechagodzilla at the bottom of the Okinawan Sea. Using the submarine, Akatsuki, they hope to gather information on the robot's builders, the alien simians. The Akatsuki is suddenly attacked by a giant aquatic dinosaur called Titanosaurus, and the crew is apparently lost.

Interpol starts an investigation into the incident. With the help of marine biologist Akira Ichinose, they trace the Titanosaurus to a reclusive, mad scientist named Shinzô Mafune, who wants to destroy all mankind. While Ichinose is visiting his old home in the seaside forest of Manazuru, they meet Mafune's lone daughter, Katsura. She tells them that not only is her father dead, but she burned all of the notes about the giant dinosaur (at her father's request). Unbeknownst to them, Mafune is still alive and well. He is visited by his friend Tsuda, who is an aide to the simian alien leader Mugal. He is leading the project to quickly rebuild Mechagodzilla. Mugal offers their services to Mafune, so that his Titanosaurus and their Mechagodzilla 2 will be the ultimate weapons. They hope to wipe out mankind and rebuild the world for themselves.

But things are complicated for both factions when Ichinose falls in love with Katsura and unwittingly gives her Interpol's information against Titanosaurus, the new Mechagodzilla, and the aliens. It's also discovered that Katsura is actually a cyborg and Mugal still has uses for her. Meanwhile, Mafune is desperate to unleash Titanosaurus without the aliens' permission, so he releases it on Yokosuka one night. By then, Interpol discovers that supersonic waves are the Titanosaurus' weakness. They had a supersonic wave oscillator ready, but Katsura sabotaged the machine before they could use it. Fortunately, Godzilla arrives to fight off Titanosaurus.

Later, when Ichinose visits Katsura, he is captured by the aliens. Tied to a chair, Ichinose can only watch as Mafune and the aliens unleash Mechagodzilla and Titanosaurus on Yokosuka, while Interpol struggles to repair their sonic wave machine and the Japanese armed forces struggle to keep the two monsters at bay. Katsura, while being controlled by Mugal, ignores Ichinose and controls both the dinosaur and the robot as they destroy the city.

Godzilla comes to the rescue, though he is outmatched by the two titans. While Interpol distracts Titanosaurus with the supersonic wave oscillator, Godzilla is able to focus on attacking Mechagodzilla. Interpol agents infiltrate the aliens' hideout, rescue Ichinose, and kill Mafune and many of the aliens. The remaining aliens attempt to escape in their ship, but Godzilla shoots them down. Katsura, while being embraced by Ichinose, shoots herself to destroy Mechagodzilla. Godzilla, with the help of the oscillator, defeats Titanosaurus (whos fate is undetermined) and heads back to sea.

A Japanese fishing vessel is trying to find its way to shore in a horrible storm while near an uninhabited island, when a giant monster appears and attacks the boat. A few days later, reporter Goro Maki finds the vessel intact but deserted. As he explores the vessel, he finds all the crew dead except for one young man called Hiroshi Okumura, who has been badly wounded. Suddenly a giant sea louse attacks but is eventually killed with some difficulty.

In Tokyo, Okumura realizes by looking at pictures that the monster he saw was a new Godzilla. However the news of Godzilla's return is kept secret to avoid panic until Godzilla attacks a second time and destroys a Soviet submarine. However, the Russians believe the attack was orchestrated by the Americans, and a diplomatic crisis ensues which threatens to escalate into war. The Japanese intervene and finally announce that Godzilla was behind the attack. The Japanese arrange a meeting with the Russian and American ambassadors and, after some debate over the issue, Prime Minister Mitamura decides nuclear weapons will not be used on Godzilla even if he were to attack the Japanese mainland, an announcement that the Russians can't come to terms with. The Japanese Self-Defense Forces are put on alert and search for Godzilla.

Soon, Godzilla appears on an island off the coast of Japan, determined to feed off a nuclear power plant there. When Godzilla attacks the facility and feeds off the reactor, he is distracted by a flock of birds, and leaves the facility almost as quickly as he arrived. Okumura and his friends realize that Godzilla reacts to the same signal as birds, and Professor Hayashida decides to use this method to lure Godzilla away from Tokyo. Meanwhile, the Russians have their own plans to counter the threat posed by Godzilla, and a Russian control ship disguised as a freighter in Tokyo Harbor prepares to launch a nuclear missile from one of their orbiting satellites should Godzilla attack.

Godzilla is later sighted at Tokyo Bay, forcing mass evacuations out of the city and a state of emergency is declared. The JASDF attacks Godzilla with Mitsubishi F-1 fighter jets, but their missiles are useless against him. Godzilla then proceeds to the coast, where the waiting army, equipped with tanks, rocket launchers and soldiers armed with Howa Type 64 assault rifles, proceeds to fire on Godzilla, but they are quickly subdued. Meanwhile, one of the crewmembers aboard the damaged Russian vessel tries to deactivate the missile, which is set for a countdown, but fails and succumbs to his injuries. Godzilla then proceeds towards Tokyo's business district, wreaking havoc along the way. There, he is confronted by two laser-armed trucks, and then the Super X, a piloted VTOL craft constructed in secret to defend Tokyo in case of emergency, in particular a nuclear attack.

Godzilla has an allergic reaction to the cadmium shells that are fired into his mouth by the Super X, and falls down unconscious. Unfortunately, the city is faced with a greater threat when the countdown ends and the Russian missile is launched from the satellite, leaving the Japanese government and people helpless to stop it. However, the Americans intervene and shoot down the missile with one of theirs before it can hit Tokyo. Unfortunately, the atmospheric nuclear blast creates an electrical storm, which revives Godzilla once more.

Godzilla has a final battle with the Super X, eventually damaging the aircraft and forcing it to make an emergency landing where he destroys it by toppling a building on it. Godzilla continues his rampage, until Professor Hayashida is successful with his invention and uses the bird call device to distract him. Godzilla leaves Tokyo and swims across the Japanese sea to volcanic Mt. Mihara, where he notices the signal device. As he walks towards it, he falls into the mouth of the volcano where he is surrounded by detonators, which are activated by Okumura, creating a controlled volcanic eruption that traps Godzilla for good, or does it?

A scientific team picks through the ruins of Tokyo, searching for tissue samples left behind by Godzilla following his recent rampage. A team of American paramilitary soldiers working for a United States-based genetics research company called Bio-Major attempts to escape with a sample, but is overcome by a lone mercenary and the samples are stolen. Meanwhile, in the Middle East, researcher Genshiro Shiragami looks forward to returning home to Japan with his daughter, Erika. However, a terrorist bombing destroys his research facility and kills Erika. Five years later, Dr. Shiragami is now a haunted dreamer, who has lately turned most of his attention to the study of the psychic energy of roses. Psychic Miki Saegusa, who also heads an institution for intuitive children, aids him in his research. Dr. Shiragami is now seen as a harmless old man who uses his scientific knowledge to satisfy his own curiosity. However, two groups are watching Dr. Shiragami: a gang of thieves hired by Bio-Major and an assassin from a Middle Eastern country called Saradia. As it turns out, Dr. Shiragami is involved in the study of Godzilla cells. It is believed by Shiragami's employers that he is aiding them in figuring out how to utilize the cells' properties to create Anti-Nuclear Energy Bacteria (ANEB), which is supposed to be used as weapons against Godzilla. The bacteria are designed to devour all radioactive material, and should prove fatal to Godzilla, but Shiragami has been conducting his own secret experiments. When the thieves and the assassin catch each other breaking into Shiragami's laboratory, a gunfight ensues. It is interrupted by an attack of a giant, mobile plant that kills one man and nearly kills another. The surviving thief flees, and the assassin barely escapes from the plant's grasp. They do not realize that they have just encountered the result of Dr. Shiragami's secret experimentations. The next morning the giant flower is seen in a nearby lake, and Dr. Shiragami confesses that he combined the DNA of roses with some extracted from Godzilla's cells. Furthermore, he confesses privately to a young official that he had, in a fit of grief-driven madness, added Erika's DNA to the genetic composite, so that technically, the creature is partially human as well. He names his creation "Biollante".

Meanwhile, Bio-Major anonymously sends a letter to the Diet of Japan, informing them that they have planted several bombs inside Mt. Mihara. If the Anti-Nuclear Bacteria is not handed over, the company threatens to detonate the bombs and release Godzilla from his prison. With the country held hostage, the Diet is forced to comply. The trade-off with the remaining thief goes well until Shiragami's assassin kills the thief. The thief dies before he can show Lieutenant Goro Gondo and Dr. Kazuhito Kirishima how to deactivate the timed explosives. Godzilla is released as Mt. Mihara is destroyed. Upon hearing Godzilla's roar, Biollante's blossom opens, and the monstrous plant begins calling out to Godzilla. Dr. Shiragami theorizes that this is because Biollante is partially composed of Godzilla's DNA. With Godzilla's destination made clear, the Japan Self-Defense Forces, under the leadership of Major Sho Koruki, prepare their strategies for dealing with the King of the Monsters. The Super X II, a remote controlled and stronger version of the first Super X, is deployed, and though it first seems effective at combating Godzilla, it is eventually overwhelmed by Godzilla's nuclear breath, and is forced to retreat. Godzilla finally reaches Biollante. A huge battle ensues, and briefly it appears that there is a stalemate. However, Godzilla defeats Biollante with his atomic breath. With Biollante apparently dead, Godzilla continues on. Godzilla, running low on radioactive energy after his fights with the Super X II and Biollante, heads towards the nearest operational nuclear reactor, which is located in Tsuruga, on the other side of the country. The military is sent out to meet Godzilla at Ise Bay. Godzilla instead surfaces in Osaka Bay, avoiding a confrontation with the JSDF. Saegusa tries to help, attempting to make Godzilla turn away from Osaka. Her efforts distract Godzilla momentarily, but the force of Godzilla's will and his physic brainpower overwhelms her and she faints. A plan is put into action, involving infecting Godzilla with the regained ANEB. In its final battle, the Super X II is destroyed by Godzilla after luring it into Osaka's business district. Lieutenant Gondo and his soldiers use rocket launchers equipped with the ANEB. The operation is initially successful, despite the death of Lieutenant Gondo, with ANEB injected into Godzilla into three points in his body. Godzilla is seemingly unaffected by it, and continues on.

The failure of the bacteria to work is attributed to Godzilla's low body temperature, which keeps the bacteria in a near-dormant state. If Godzilla can be heated up somehow, Shiragami theorizes, then the ANEB should work. The JSDF develops another plan: force Godzilla onto a field of microwave-emitting plates during an artificial thunderstorm, where it will be heated by the microwaves. The operation begins, but it seems that Godzilla is not affected by the microwaves as he crushes it. Just as everything seems lost, a low rumble is heard and Biollante's spores rain down from the sky. Suddenly a larger, more Godzilla-like Biollante emerges from the ground. After destroying all nearby land forces, Biollante attacks Godzilla, and the two massive monsters fight to the death with Godzilla beginning to lose. At the last minute Godzilla blasts his atomic breath into Biollante's mouth. However, Godzilla falls headfirst into the ocean. With Godzilla temporarily knocked out, an injured Biollante dissolves into spores that fly upwards into space. As the monster's remains float upwards, Dr. Shiragami sees the image of his daughter among the spores. Calling out to her, he walks forward and gets killed by the Saradian agent, who is still after Godzilla's cells. Godzilla is dying and therefore will be unable to escape when the terrorist tries to get the cell. Dr. Kirishima chases the agent and fights him. The agent is at a disadvantage until he is able to grab his weapon again. The Saradian agent attempts to kill Kirishima, but Major Koruki disintegrates the terrorist. The characters celebrate their victory when Godzilla returns from the sea waters. The body of Dr. Shiragami is placed inside a tent, with his superior briefly mourning him before leaving. Erika's voice is heard to comment on the events of the film. Godzilla wades out to sea and Biollante, once again a giant rose, orbits Earth.

Kenichiro Terasawa (Kosuke Toyohara), an author of books on psychic phenomena, believes he's discovered Godzilla's true origin. During World War II, a group of Japanese soldiers stationed on Lagos Island in South Pacific [2] were unintentionally saved by a Godzillasaurus, which attacked and killed a group of American soldiers who had landed on the island in February 1944 as part of the Gilbert and Marshall Islands campaign. While all of the Japanese soldiers on the nearby Islands fought and died to the last man, the Japanese soldiers on Lagos survived the war and eventually returned to Japan. In 1954, the island was destroyed by a hydrogen bomb test, just months before Godzilla first attacked Tokyo.

Yasuaki Shindo (Yoshio Tsuchiya), who commanded the Japanese on Lagos, is now a wealthy businessman who denies the dinosaur's existence. Meanwhile, a UFO lands on Mount Fuji. When the army investigates, they are greeted by Wilson (Chuck Wilson), Grenchko (Richard Berger), Emmy Kano (Anna Nakagawa) and android M-11 (Robert Scott Field). The visitors, called the Futurians, explain that they're from the year 2204, a time long after Japan had been completely destroyed by Godzilla. They explain that they can time travel back to 1944 and remove the Godzillasaurus from Lagos, thereby avoiding the creation of Godzilla. As proof of their story, Emmy presents to the Japanese government a copy of Terasawa's book, which he hasn't even written yet.

Terasawa, psychic Miki Saegusa (Megumi Odaka) and Professor Mazaki (Katsuhiko Sasaki) board a time shuttle and travel back to 1944. As American forces land on the island and engage the Japanese forces commanded by Shindo, the dinosaur attacks the American soldiers. However, subsequent bombardment from American naval vessels leaves it gravely wounded. Shindo and his men, after thanking the Godzillasaurus, withdraw. M-11 then teleports the dinosaur far from Lagos. They then return to 1992, but not before releasing three, small artificial creatures called Doratss on Lagos. The radiation as a result of the nuclear test fuses them into King Ghidorah. The Futurians use Ghidorah in the present to subjugate Japan. They issue an ultimatum, but Japan refuses to surrender.

Feeling sympathy for the Japanese, Emmy reveals the truth behind the Futurians' mission: In the future, Japan becomes very wealthy and its economy surpasses that of the United States, Russia and China. The Futurians in fact stole the time machine and plan to use King Ghidorah to alter the future by devastating present-day Japan, preventing its future economic reign. After she is returned to her ship by M-11, she reprograms the android. With his, and Terasawa's aid, they sabotage Ghidorah's control in the UFO. However, Emmy's companions reveal that their ship is bound to automatic time warp in the event of sabotage, allowing them to return to a future where Japan has been destroyed either way.

Shindo, meanwhile, believes that Godzilla can be re-created using his secret, nuclear submarine. But while on its mission, the submarine is destroyed by Godzilla; Terasawa learns that a Russian nuclear submarine sank in the same region the Godzillasaurus was teleported to, giving off enough radiation to create the same Godzilla who destroyed Tokyo in 1984. In an ironic twist of fate, the Futurians had not erased the original Godzilla from history, they had actually created the second and current Godzilla.

Godzilla finally arrives in Japan and is greeted by King Ghidorah, who was sent by Wilson to destroy Godzilla. Godzilla and King Ghidorah have a long hard battle which eventually ends with Godzilla blasting the middle head of King Ghidorah. Before the final blow, Godzilla destroys the UFO, which was teleported by M-11 before it could time warp, killing Wilson and Grenchko. The JSDF attack Godzilla in Sapporo, to no avail. He then turns his attention on Tokyo, destroying the metropolis. In the process, Shindo is killed; though not before he and Godzilla share a brief moment, where Godzilla is seemingly sad for once.

Emmy, however, travels to the future and returns with Mecha-King Ghidorah, a resurrected cyborg version of the original creature. Battling in the heart of Tokyo, Emmy carries Godzilla off and drops the monster together with Ghidorah into the ocean. She then returns to the future in the time shuttle, but not before informing Terasawa that she is in fact a descendant of his.

At the bottom of the sea, Godzilla recovers and roars over Mecha-King Ghidorah's remains

A large meteor hurtles towards earth, lands in the ocean and awakens Godzilla. One particularly large typhoon is monitored over the Pacific ocean. The next day, a young man named Takuya Fujita is detained after stealing an ancient artifact. Later, a representative of the Japanese Prime Minister arrives with Takuya's ex-wife, Masako Tezuka, and offers him to explore an island with Masako and Marutomo company secretary, Kenji Ando, and become a free man. Takuya initially turns down the offer, on the basis that he is to be released in another week. But after his ex-wife informs him that his sentence has been reconsidered, he accepts. After the trio arrives at the island, they find a cave behind a waterfall. Inside, they discover ancient paintings, including a picture of two giant insects fighting one another. While studying them, the sun shines through a hole in the wall, and the light points to a small opening in the cave, where they come upon a giant egg. The three hear a pair of voices, which belong to the Cosmos. They keep the earth's natural order in balance, and informs them the egg belongs to Mothra.

The Cosmos tell of an ancient, advanced civilization that tried to control the earth's climate. In return, the earth created Battra. Battra became uncontrollable, and started to harm the very planet that created it. Mothra, another earth protector, fought a fierce battle with Battra, who eventually lost. However, in the course of the battle, the civilization was destroyed. Mothra retired to Infant Island, and Battra the Northern Sea. Due to recent disasters, Mothra's egg has been uncovered, and the Cosmos fear that Battra has awoken as well.

Meanwhile, Japanese forces try to stop Battra's invasion, but fail. Makoto then orders a freighter sent to Infant Island to pick up the egg, planning to exploit it. Ando explains to Masako and Takuya that, contrary to Takeshi's true intentions, he intends to protect the egg, and the Cosmos agree to let him take it. As they are sailing, Godzilla surfaces, and heads toward the egg. The egg then hatches, and a Mothra larvae crawls out. The two begin fighting. Battra soon appears and joins the fight, with Mothra caught in the middle. Mothra finally gets a chance at escape, and takes it. The battle between Godzilla and Battra is eventually taken underwater, where the force of the battle causes a giant crack in the ocean's floor that swallows the two.

After the ordeal at sea, Takuya, Ando, Masako, and the Cosmos stay overnight at a hotel. While Ando is drinking, Masako and Takuya have a discussion about the day's events, and about their history together. Masako awakens to discover that the Cosmos have gone missing, and immediately wakes up Takuya, who immediately realizes that Ando took them back to Takeshi. The two take a flight back to Tokyo, where Masako meets up with their daughter, Midori, her sister, Mayumi, and Professor Fukazawa. While they talk, Takuya leaves.

Masako then goes to the Diet to try to get them to buy the Cosmos back. They offer Takeshi all they can afford, but he turns them down. While this is happening, the Cosmos call out to Mothra and are saved. Marutomo employees discover the Cosmos are missing, and suspects the government of stealing them. Meanwhile, the government discovers that Mothra is on her way to Japan. While they are not certain of how Mothra will behave, they feel they must prepare for the worst. The next day, Masako sets out with Midori and telepath Miki Saegusa to find the Cosmos. After driving throughout the city, Miki finally hears the Cosmos' song and leads them to a hotel, where they find Takuya in possession of the Cosmos, and trying to sell them. While all this is happening, Mothra is heading through the city, directly towards the hotel. After Midori begs him to release the Cosmos, Takuya reconciles, and lets them free. The Cosmos then tell Mothra to leave the city, and not to hurt anyone else. Mothra turns around, and heads back. The forces attack again, but stop when they realize that Masako and the others are in the hotel. Mothra, behaving strangely, heads for the Diet building. Mothra starts building a cocoon around herself. While she does this, Miki feels Godzilla is alive, and has just surfaced from Mount Fuji. Mothra transforms into her adult form and flies away. Battra, alive as well, also transforms into his adult form.

Mothra and Battra meet up at Yokohama Cosmo World, and proceed to battle. At this point, Godzilla shows up and Battra decides that Godzilla is a more important target, and attacks him instead. Godzilla soon defeats Battra. At this point, Mothra charges Godzilla with her rays. With Godzilla temporarily disabled, Mothra flies towards Battra, and revives him.

Godzilla then fires his atomic ray at a nearby Ferris wheel and attempts to collapse it onto Mothra. Battra grabs the Ferris wheel, and crashes it onto Godzilla. Eventually, Godzilla is overwhelmed and falls to the ground, and Mothra and Battra set to carry Godzilla back into the ocean. Over the sea, Godzilla fires a blast at Battra from point blank range, killing him. A tired Mothra drops Godzilla and the lifeless Battra into the water below. The next morning, the Cosmos explain Battra had been waiting many years to destroy an even larger meteorite that would threaten the earth in 1999. Mothra had promised she would stop the future collision if Battra were to die, and she and the Cosmos leave earth as the humans bid farewell. Cast

In 1992, the United Nations establishes the United Nations Godzilla Countermeasures Center (UNGCC) to stop Godzilla. The remains of Mecha-King Ghidorah are salvaged from the ocean and used to create two anti-Godzilla machines. The first is a flying gunship called Garuda. The second and more powerful machine, modeled after Godzilla himself, is called Mechagodzilla.

Two years later, on a mission to Adona Island in the Bering Sea, a Japanese team comes across what they assume is a large pteranodon egg. The egg gives off a strange telepathic signal that attracts Godzilla and Rodan, an adult pteranodon irradiated by the nuclear waste. Both monsters appear and fight for the egg. During their battle Godzilla critically wounds Rodan while the research team escapes with the egg. It's taken to a research center in Kyoto, where it imprints on a young female scientist. When a Baby Godzilla hatches from the egg, the research team concludes that the egg was left in the pteranodon nest with Rodan, just as European cuckoos leave their eggs in the nests of other birds. Godzilla appears in Japan, once again responding to the creature's psychic call. The JSDF mobilizes Mechagodzilla, which intercepts Godzilla as he is making his way to Kyoto. Before Mechagodzilla can kill Godzilla, it malfunctions, allowing Godzilla to regain his strength and temporarily defeat his mechanical double. Godzilla continues searching for Baby, but the scientists, having discovered the telepathic link between the monsters, shield it from Godzilla. Frustrated, Godzilla destroys most of Kyoto before returning to the ocean.

Tests on the baby reveal that it has a second brain in his hips that controls the animal's movement. The UNGCC assumes that the same goes for Godzilla and decide to Baby to bait Godzilla into a fight with Mechagodzilla. The "G-Crusher" is installed in Mechagodzilla's wrists, allowing the robot to penetrate Godzilla's hide and paralyze the monster by destroying its second brain. The plan backfires, however, when Rodan, having survived his battle with Godzilla and further mutated by radiation, responds to Baby's call and intercepts the UNGCC transport.

The UNGCC is forced to send Mechagodzilla and Garuda after Rodan instead and, in the ensuing battle, Rodan is mortally wounded. Godzilla shows up moments later and attacks Mechagodzilla. When the two appear to be evenly matched, Mechagodzilla combines with Garuda. The upgraded Mechagodzilla, called Super-Mechagodzilla, carries out the G-Crusher plan and succeeds in paralyzing Godzilla. Suddenly, the dying Rodan, once again revived by Baby's call, attempts to escape. Super-Mechagodzilla shoots him down and Rodan lands on top of Godzilla. Rodan's lifeforce regenerates Godzilla's second brain and supercharges him. Now more unstoppable than before, Godzilla attacks and destroys Super-Mechagodzilla with a high-powered red atomic ray.

Godzilla finally locates Baby, who is at first afraid of the giant monster. Miki Saegusa, a young psychic woman with a link to Godzilla, telepathically communicates with Godzilla, convincing him to adopt Baby as his own.

Godzilla cells brought into space (either by Biollante or Mothra) are exposed to intense radiation from a black hole. The celestial fission creates a highly aggressive extraterrestrial beast closely resembling Godzilla. This "SpaceGodzilla" quickly makes its way to Earth.

Meanwhile, a group of soldiers and scientists are setting up at Birth Island to try Project T against Godzilla, who has taken up residence on the isle. The plan is to plant a device on Godzilla which will allow the Japan Self Defense Forces to control the mutant dinosaur telepathically. With help from psychic Miki Saegusa, the project is put into action, but it ultimately fails. Afterward, the Cosmos, Mothra's twin priestesses, appear to Miki and warn her of SpaceGodzilla's arrival. With Mothra gone to space, the world will have to rely on Godzilla to stop the invader. SpaceGodzilla gets closer and closer to Earth, destroying a NASA space station along the way, Moguera, a giant penguin-like robot built by the JSDF to replace the Mechagodzilla, is sent in to intercept SpaceGodzilla, but the alien uses a number of psychic attacks to cripple the robot, forcing it to retreat.

Attracted to Godzilla's radiation, SpaceGodzilla lands on Birth Island, where it finds Godzilla's son, Little Godzilla. SpaceGodzilla mercilessly attacks the small creature when he approaches it curiously, and Godzilla comes to his son's rescue. Godzilla puts up a good fight, but finds himself overwhelmed by SpaceGodzilla's power and is knocked out. With Godzilla temporarily subdued, SpaceGodzilla creates a small cage made of crystals and traps Little Godzilla inside of it. It then leaves for Japan, intending to destroy it. Godzilla, after failing to free his son from the cage, follows SpaceGodzilla.

Shortly thereafter, the Yakuza captures Miki and brings her back to their base in Fukuoka in an attempt to use Project T to gain control of Godzilla. Fortunately, a recovery team is successfully dispatched and Miki and the team escape before SpaceGodzilla arrives and destroys the building. SpaceGodzilla lands in central Fukuoka and forms a massive fortress of celestial crystals. Moguera arrives to once again fight SpaceGodzilla, but is still no match for it. Godzilla arrives in Kagoshima Bay and fights SpaceGodzilla, but SpaceGodzilla's cosmic powers easily allow it to gain the upper hand.

The JSDF discovers that SpaceGodzilla is using Fukuoka Tower as a power converter, using it to transform the Earth's core into an energy that SpaceGodzilla can absorb, slowly killing the planet. While Godzilla wrestles with SpaceGodzilla, Moguera splits into two different mechs: the Star Falcon, a flying battleship, and the Land Moguera, a tank. The mechs damage the crystal fortress while Godzilla pushes over Fukuoka Tower, cutting off SpaceGodzilla's energy supply. Moguera quickly reforms and blasts off SpaceGodzilla's crystal-like shoulder formations, weakening it. Enraged, SpaceGodzilla beats Moguera into submission and starts to throttle Godzilla, who further wounds SpaceGodzilla by gouging out his eyes.

With SpaceGodzilla brutally beaten and blinded, Moguera uses up the last of its power supply by ramming into the alien beast, but SpaceGodzilla impales Moguera with its tail and hurls it into the remains of the crystal fortress. Godzilla blasts SpaceGodzilla with his atomic ray, sending him crashing on top of Moguera. With a supercharged atomic blast, Godzilla eradicates SpaceGodzilla including Moguera's remains, and cosmic energy floats from the inferno and vanishes in the atmosphere.

Having won the fight, Godzilla makes his way back to Birth Island. Before he departs, Miki uses her psychic powers to remove the mind control device from Godzilla's neck. Meanwhile, Little Godzilla is free and can blow bubbles of fire.

In 1996, Miki Saegusa travels to Birth Island to check on Godzilla and his adopted son. However, she finds the entire island destroyed. In Hong Kong, Godzilla appears covered in glowing lava-like rashes. He goes on a rampage, causing major collateral damage and killing thousands of civilians. A group of representatives from the Japan Self Defense Forces hire college student Kenichi Yamane, the grandson of Dr. Kyohei Yamane, to come work at the center in an attempt to unravel the mystery of Godzilla's condition. Yamane suspects that Godzilla's heart, which acts as a nuclear reactor, is going through a nuclear meltdown. When Godzilla reaches 1,200 degrees Celsius, he will explode with the force of a thousand nuclear explosions, taking most of the world with him.

The JSDF deploys a flying combat vehicle outfitted with anti-nuclear cold weapons to forestall this; the Super-X III. Meanwhile, scientists create a new formula for the Oxygen Destroyer that was created by Dr. Serizawa in 1954. This does not sit well with the JSDF, who fear that the Oxygen Destroyer, which was used to kill the original Godzilla, may have disastrous side effects. This belief is proven when a colony of Precambrian organisms are discovered to have been mutated by the formula. The creatures infest a sewer network and eventually make their way into an aquarium, killing all the sea life inside. They rapidly evolve into monstrous crab-like creatures and begin wreaking havoc. After several deadly skirmishes with the JSDF, the creatures, dubbed "Destoroyah", evolve beyond the military's containment abilities.

Little Godzilla reappears as Godzilla Junior, having mutated further and now closely resembling his father, heads for the island where he was born. Godzilla, who is searching for his son, follows him, but complications arise. Due to his encounter with the Super-X III, Godzilla will not explode but will instead suffer a bodily meltdown. After dying from the meltdown, Godzilla's superheated remains will bore into the planet's core, destroying the earth. Desperate, the JSDF decide to lure Godzilla into a confrontation with the evolving Destoroyah by hiring Miki and another psychic named Meru Ozawa into telepathically instructing Junior to travel to Tokyo, which Destoroyah is currently invading. Godzilla will no doubt follow, and since Destoroyah was born from the same weapon that destroyed the first Godzilla, he will surely lose the battle, preventing the meltdown.

The psychics successfully lure Godzilla Junior to Tokyo, where he is attacked by Destoroyah, who has now increased in size and sprouted a pair of bat-like wings. In the ensuing brawl, Destoroyah is seemingly killed after being blown into an electrical plant. By nightfall, Godzilla and Junior meet near Haneda Airport. Their reunion is cut short when Destoroyah, having once again evolved and now outmatching Godzilla in height, flies in for another attack. Destoroyah knocks down Godzilla and grabs Junior, dropping him from an extreme altitude that brings the young dinosaur close to death. Godzilla, enraged, attacks Destoroyah and a brutal battle erupts. The two creatures inflict serious wounds upon each other, each calling upon their own unique abilities to destroy the other. Eventually, Godzilla sends Destoroyah spewing up vital fluids, forcing the creature to retreat.

Alone at last, Godzilla tries to revive his son but fails. Overcome by grief, Godzilla's heart continues to fail, accelerating the meltdown. Destoroyah, having recovered from its previous injuries, once again appears. In a fury of rage, Godzilla bombards Destoroyah with a number of supercharged atomic blasts, blowing the creature to pieces. Overcome by the attack and the extreme heat from Godzilla's meltdown, Destoroyah tries to fly away, but the JSDF shoots it down with a number of freeze weapons designed to work against Godzilla. Upon hitting the ground, Destoroyah disintegrates from thermal shock.

Moments later, Godzilla starts to die from the meltdown, but the JSDF are able to sustain him momentarily with the freeze weapons. Ultimately, they were unable to rescue Godzilla and he gives out one last weak roar before he tragically suffers his meltdown. While they succeeded in preventing earth's destruction, the JSDF have been unable to stop the massive nuclear fallout from rendering Tokyo uninhabitable. All of a sudden, the radiation levels plummet and something can be seen stirring in the mist: Godzilla had given his final gift to Junior; he transferred his radiation to his son allowing him to carry on his father's legacy as the new Godzilla.

Godzilla is a literal force of nature to Japan (after the incident in 1954). After Y2K, the Godzilla Prediction Network (GPN) functions independently to study the mutant dinosaur and predict his landfalls. Meanwhile, the scientists of Crisis Control Intelligence (CCI) find a sixty million year old UFO deep in the Japan Trench. As CCI attempts to raise the UFO to study it, it takes off into the sky on its own. Godzilla arrives and battles the Japan Self Defense Forces, now equipped with powerful Full Metal Missiles, but the UFO appears, searching for genetic information that only Godzilla possesses. It fights Godzilla to a standstill, driving the monster underwater, and then lands to replenish its solar power.

Yuji Shinoda, the founder of the GPN, discovers the secret to Godzilla's regenerative properties (named Organizer G1 in the Japanese version, but Regenerator G1 in the North American release), but so has the UFO. It frees itself from the JSDF's attempts to contain it, and heads for Shinjuku. After landing atop Tokyo Opera City Tower, it begins to drain all the files about Godzilla from Tokyo's master computers. CCI attempts to destroy the UFO using explosive charges, but Shinoda, attempting to find out more about the aliens, is nearly caught in the blast. He survives, and joins the rest of the cast on a rooftop, watching the UFO. Almost in response, the UFO broadcasts its message of invasion and a new empire on earth, and Shinoda reveals that the aliens are after Godzilla's DNA so that they may re-form their bodies.

Godzilla arrives and again battles the UFO. However, he is subdued by the UFO's assault, and it absorbs some of his Organizer G1, growing into a squid-like creature called the Millennian. However, the Millennian is unable to control Godzilla's DNA and further mutates into a horrible monster named Orga. Godzilla recovers and fights Orga, but it eventually gains the upper hand, and drains more of Godzilla's DNA, trying to convert itself into a Godzilla clone. Finally, Orga opens its mouth, intending to swallow Godzilla whole, but Godzilla tricks it by deliberately throwing his head into its throat. While Orga begins to transform, Godzilla unleashes his nuclear pulse, beheading Orga and blowing the alien to bits. Godzilla then kills Mitsuo Katagiri, head of CCI, before beginning a rampage through Tokyo.

An experimental satellite-based weapon that fires miniature black holes, called the Dimension Tide, opens a wormhole through which a prehistoric dragonfly enters the present and deposits a single egg before exiting through the wormhole. A boy finds the egg and takes it with him when he moves to Tokyo. The egg starts oozing a strange liquid, so the boy throws the egg in the sewer. The egg, actually a mass of hundreds of eggs, splits up and starts growing when exposed to water, hatching into large dragonfly larva called Meganulon that come out of the sewer to feed. They flood a portion of the city and moult on the sides of buildings, becoming adult Meganula.

Meanwhile, the atomic dinosaur Godzilla appears, in search of a source of nuclear energy, despite the edict shutting down all such attractants after his three previous appearances. While Godzilla is fighting the G-Graspers (the anti-Godzilla section of the Japan Self Defense Forces) who are assisted by rebellious scientist Hajime Kudo, the swarm of Meganula are attracted in turn to Godzilla's energy, and attack him. Most Meganula are killed, but a few drain some of Godzilla's energy and return to the sewer. With the last of their strength, the Meganula inject Godzilla's energy into a huge, sleeping larva that is in a giant, pulsating cocoon. It molts and appears from the water as Megaguirus, the queen of the Meganula.

After destroying part of the city with shock waves generated by her beating wings, Megaguirus heads to the waterfront and faces Godzilla. Being territorial, Megaguirus considers the city to be her hunting ground. As they engage in a lengthy battle, she uses her speed to avoid Godzilla's attacks, but Godzilla eventually uses her speed against her. As she flies toward Godzilla, he lunges forward with his dorsal fins in her path. She flies into the fins, and one of her arms is severed.

During the battle, a special ability of Megaguirus is revealed: Having been mutated by Godzilla's energy, she can generate a blast similar to his atomic breath. She fires a huge ball of radiation, knocking Godzilla down. He gets back up, and Megaguirus goes in for the kill. She speeds forward with the stinger on her long tail lowered, trying to stab Godzilla between the eyes. In a climactic moment, Godzilla catches the stinger in his mouth. He bites down, crushing the stinger. Megaguirus rears up in pain, and Godzilla takes the chance to finally blast her with his atomic breath. She bursts into flames and Godzilla blasts her a second time and destroys her.

It is revealed that Godzilla was attracted to the energy of a secret nuclear project housed at the Science Institute, in violation of the ban, by Professor Yoshino Yoshizawa. The G-Graspers are now wanting to kill Godzilla (even though he just saved them from Megaguirus), but with the Dimension Tide falling out of orbit they are unable to get a lock on Godzilla, until the vengeful Major Kiriko Tsujimori pilots a ship called Gryphon towards Godzilla, ejecting only at the last second. The Dimension Tide is able to lock on to the craft and fires just before burning up on reentry; Godzilla vanishes and everyone celebrates. In a postlude, however, Major Tsujimori again enlists Kudo to investigate suspicious seismic activity; then in an after-credits scene, Godzilla's roar is heard again as an earthquake strikes Tokyo.

In Tokyo, following the giant monster attack in New York City, a meeting of the Japan Self-Defense Forces is held to discuss the potential return of Godzilla. During the meeting, Admiral Taizo Tachibana briefs cadets about Godzilla's attack on Tokyo 50 years ago. A nuclear submarine is reported missing, which is later found to have been destroyed by Godzilla. Tachibana's daughter, Yuri Tachibana film a docudrama with her crew at Mt. Myoko, where a mysterious earthquake randomly ensues. The odd earthquake returns later that night burying a biker gang and leaving one surviving trucker who witnesses the monster, Baragon.

The next day, Yuri is unable to convince her manager to report the incident The Self Defense Force attempts to rescue the buried men using a missile called D-03. The surviving trucker tries to explain to a military official what he saw but can only explain that he believed it was Godzilla. Yuri's friend, Teruaki Takeda, supports her theory that a monster may have been the cause of the mysterious Myoko earthquake by giving her a book on The Guardian Monsters.

Meanwhile, a few teenagers at Lake Ikeda in Kagoshima are attacked by an insect monster, Mothra. The Defense Force analyzes underwater footage of what appears to be glowing dorsal fins leaving the destroyed nuclear submarine from before. The conclusion is drawn that the monster is Godzilla. Yuri interviews Hirotoshi Isayama, an elderly man who foretells the return of Godzilla. Isayama explains to her the legend of the guardian monsters, Baragon, Mothra, and King Ghidorah and goes on that they must be awakened before Godzilla destroys Japan. Yuri and her team visit the guardian monsters shrine where she finds a stone. Godzilla comes ashore to Magonote and attacks the Bonin Islands, leaving few survivors. Yuri returns to interview Isayama and discovers that the poor lost souls of World War II are embedded within Godzilla and wish to destroy Japan after the nation forgotten their sacrifices.

A few days later, Godzilla and Baragon finally appear in Japan and engage in a ferocious battle in Hakone. Yuri and Takeda are trapped in the midst of the battle when Godzilla mercilessly defeats Baragon with his atomic breath. After the battle, Yuri receives a minor injury to the head. Fearing for her safety, Takeda refuses to take her to Godzilla's location. Angered, Yuri goes alone. Mothra's cocoon is soon immediately discovered in Lake Ikeda. The SDF dispatch several fighter jets to stop Godzilla but are quickly defeated by the monster. Tachibana sets up a defense line in Yokohama. Mothra and a yet-to-be-grown Ghidorah awaken and fly towards Yokohama where Godzilla is spotted. Mothra arrives first and battles the monster. Ghidorah arrives moments later and joins the fray. After brutally pinning down both monsters, the SDF engage Godzilla with D-03 missiles but to no avail.

Enraged, Godzilla swiftly destroys nearly the entire defense line using his atomic breath. Mothra rises for a surprise attack but Godzilla kills her with his atomic breath. Mothra's spirit intertwines with Ghidorah and transforms him into the 3,000 year old dragon King Ghidorah. King Ghidorah injures Godzilla and takes the battle underwater. Tachibana and his colleague join the fight using the Satsuma submarine. Tachibana plans to shoots a D-03 into Godzilla's wound but fails after several attempts. Yuri and Takeda report the struggle from a bridge that later collapses from Godzilla's atomic breath.

Takeda and Yuri hold on but the shrine stone falls from Takeda's pockets and sink into the deep, melting on King Ghidorah's head. Ghidorah's power is strengthened up and takes the battle to the surface once more. Yuri and Takeda barely survive the fall and swim ashore while the monsters continue to fight. Godzilla destroys King Ghidorah with a super power breath and unleashes the spirits of the Guardian Monsters, which sink him down to the deep. After entering Godzilla's body through his mouth, Tachibana successfully plants a D-03 missile in Godzilla's wound. Godzilla surfaces to come face to face with Yuri and Takeda but the monster collapses when the missile explodes. Tachibana exits Godzilla's body through the monster's wound right before the monster disintegrates. Japan soon rejoices at their victory against Godzilla. However, the monster's heart continues to beat on the ocean floor.

The year is 1999, 45 years after the first Godzilla attack in 1954. When Lieutenant Akane Yashiro, a mazer technician, fails to kill Godzilla during her first combat engagement, she is made a scapegoat for the military's losses during the battle and consequently transferred to a desk job. During the battle, it is discovered that Godzilla is immune to mazer fire, rendering all of the Japanese military useless against him should he return. Scientists, including single father Tokumitsu Yuhara, are gathered to build a bio-mechanical robot from the original Godzilla's skeleton. 4 years later, the cyborg, called [Mechagodzilla], is finished and inducted into the Japan Self-Defense Forces along with its human pilots as the Mechagodzilla Squadron. Akane becomes the main pilot for Mechagodzilla. However, memories of Akane's actions during the original engagement in 1999 still lingers her, and one of her squadron mates, 2nd lieutenant Susumu Hayama, is openly hostile towards her, blaming her for the death of his brother in that same fight.

A while later, Mechagodzilla is shown to the world, and the complete system that controls the unit is explained. Mechagodzilla is controlled remotely from a control craft that resembles a very large jet fighter with VSTOL capabilities. It can be remotely recharged from the ground using microwaves that are relayed through a power system on one of the command aircraft, and then beamed back down to Mechagodzilla. For the end of the presentation, its greatest and most powerful weapon, the freezing Absolute Zero cannon, is shown. At the same time, Godzilla shows up once again, and Mechagodzilla is launched into battle. In the midst of the first battle, Mechagodzilla's soul is awoken by Godzilla's roar and brings with it the memories of the original Godzilla's death years ago. As if possessed by the original Godzilla, Mechagodzilla proceeds to destroy the city around it after Godzilla retreats to the ocean floor. Horrified, the Mechagodzilla Squadron can only watch in terror and alarm as the rampaging cyborg destroys more city property than Godzilla did. After 1 hour, Mechagodzilla runs out of energy and is brought back to headquarters for further work.

All the while, Akane tries to settle matters involving Hayama, Tokumitsu, and his distressed daughter, Sara; who sees Mechagodzilla as a being with a right to life and that it should befriend Godzilla rather than battle him. Later, Godzilla attacks again. After repairs are made, Mechagodzilla is released from the air and hits Godzilla with immense speed. At this point, Godzilla and Mechagodzilla face off in a head-to-head battle where each combatant sizes up its opposite and exchange powerful blows that also devastate the cityscape around them. Mechagodzilla gains the upper hand and beats down Godzilla. Mechagodzilla grabbed his tail, spun him around, lets go of his tail to let him go flying. Mechagodzilla proceeded to launch the Absolute Zero, but Godzilla fires his atomic breath. During the course of the impact, Mechagodzilla is disabled, and the remote piloting system completely taken offline. In an effort to continue the fight and press what advantage over Godzilla they still have, Akane orders the pilot to land his command craft so that she can make her way to Mechagodzilla and take control from its internal backup cockpit. Now under direct human control, Mechagodzilla rises from the ground one more time and closes in on Godzilla for a final blow, hoping to use the Absolute Zero cannon at point-blank range. The two titans collide, and Akane uses Mechagodzilla`s thrusters to propel it and Godzilla out to sea before the cannon fires, freezing a huge portion of the ocean around them. After the blast clears, Godzilla is shown with a huge gash in his chest, steadily walking back into the ocean. Mechagodzilla is heavily damaged, missing its right arm, and the Absolute Zero cannon shown to be devastated. While failing to kill Godzilla, the Kiryu Squardron feels victorious in being able to drive the monster away... for now.

The closing image and post-end credits scene of the film show Akane standing on the shoulder of the heavily damaged Mechagodzilla, watching Godzilla slowly retreat out to the ocean with a respectful expression on her face. Following the credits, an additional scene reveals that Akane agrees to have dinner with Tokumitsu and Sara and gives Mechagodzilla one last salute as it goes it goes into the ocean with godzilla

Kiryu is undergoing repair modifications after its battle with Godzilla. Prime Minister Hayato Igarashi accepts Lead Scientist Yoshito Chujo's choice to replace the Absolute Zero Cannon with a powerful Tri-Maser.

The Shobijin (Mothra's twin fairies) warn the Japanese government that Godzilla continues returning to Japan because they used the original Godzilla's bones in Kiryu's design. If they return the bones to the bottom of the sea, Mothra would gladly take Kiryu's place in defending Japan, but if they do not, Mothra will declare war on humanity. Soon enough, Kamoebas, a giant mata mata turtle, is found washed ashore on a Japanese beach. It is determined by the wounds on Kamoebas' neck that Godzilla killed it. Godzilla and Mothra fight, but Godzilla seems to have the upper hand. With the repairs finished just in time, Kiryu manages to even the odds, but Godzilla manages to knock out both monsters.

Meanwhile, on Infant Island, two twin Mothra larvae hatch from Mothra's egg, and rush to help their mother. As Kiryu was being repaired, the larvae try to hold Godzilla off, but Mothra is killed by Godzilla's atomic breath while trying to save her children. Just in time, Yoshito and the humans repair Kiryu, who stabs Godzilla's chest with a drill, causing Godzilla to bleed. Godzilla roars in pain, and the larvae begin to bind him up in web. Just as Kiryu's pilot, Azusa Kisaragi, receives the order by Igarashi to destroy Godzilla before the Kiryu project is scrapped, Kiryu's soul is re-awakened through Godzilla's roar. The cyborg lifts Godzilla and secures themselves with cables. Kiryu then uses its boosters to carry itself and Godzilla to the bottom of the ocean.

In the film's post-credits scene, in an undisclosed location, a laboratory is shown, filled with canisters that contain the DNA of numerous Toho kaiju. It is stated in the Japanese version via on off-screen voice giving announcements that a "bio-formation" experiment involving an "extinct subject" is about to take place, implying that the JXSDF plans to create another mecha or kaiju-based superweapon, which could mean that Godzilla or another monster could appear once again.

Endless warfare and environmental pollution has resulted in dangerous kaiju and the Earth Defense Force (EDF) is created to protect the planet. The organization is equipped with the best technology, weapons and soldiers, as well as mutants with special abilities. Godzilla is the EDF's only unstoppable opponent. The EDF's best combat vehicle, the Gotengo, corners Godzilla at the South Pole and buries him under the Antarctic ice, freezing him alive.

Forty years later, the EDF discovers a mummified space monster. Mutant soldier Shinichi Ozaki and United Nations biologist Dr. Miyuki Otonashi are sent to research it. Shortly thereafter, the two encounter the Shobijin, fairies of the guardian monster Mothra, who reveal that the monster is Gigan, an alien cyborg sent to destroy Earth 12,000 years earlier. They also warn that a battle between good and evil will happen soon.

Monsters appear in major cities on Earth and the EDF attempts to drive them away. The monsters include Anguirus in Shanghai, Rodan in New York City, King Caesar in Okinawa, Kamacuras in Paris, Kumonga in Arizona, Zilla in Sydney and Ebirah near Tokyo. Despite defeating Ebirah, the EDF is unsuccessful in destroying the monsters. After destroying most of the cities, the monsters vanish and an enormous alien mothership appears over Tokyo. The aliens, known as Xilians, say that they are friendly and have eliminated the monsters. They also warn the Earth about an impending asteroid called Gorath that will impact soon. Because of their seemingly-friendly nature, the UN is disbanded and the Space Nations, an alliance to unite the universe, is organized.

Ozaki, Miyuki, the Gotengo's captain Douglas Gordon and several others distrust the aliens. Using research and undercover work, they discover that the Xilians are actually the ones who unleashed the monsters, and they replaced several members of the EDF with android duplicates. They plan on subjugating humanity to harvest their mitochondria for food. The Xilians are exposed on television. Opposed to the Xilian commander's decision to subtly take over Earth, the alien's subordinate, the Regulator named X, kills the commander and assumes control of Earth's mutants, except for Ozaki. The monsters are again released in Earth's major cities. Ozaki, Miyuki, Gordon, and others flee to their secret facility.

On Mt. Fuji, a hunter, Samon Taguchi, and his grandson, Kenta, discover Minilla, Godzilla's son. They are successful in keeping a low profile and hiding from the Xilians' assault.

Gordon proposes freeing Godzilla to allow the dinosaur to defeat the other monsters. Using the Gotengo, the EDF goes to Antarctica while being chased by Gigan. After Godzilla is released from his hibernation, he kills Gigan, and follows the Gotengo. The Gotengo returns for Tokyo, hoping Godzilla will unwittingly defeat the Xilians. The Xilians send the controlled monsters after Godzilla, but he defeats them in short battles. The Gotengo and Godzilla arrive at Tokyo, whereupon the Gotengo enters the mothership.

During the battle, Ozaki's friend Kazama destroys the Mothership's shield generator at the cost of his own life. Meanwhile, the asteroid Gorath strikes Godzilla. Monster X materializes and starts to battle Godzilla. Gigan, who has now been upgraded, aids Monster X, but Mothra arrives to engage him into battle. Inside the Xilian mothership, the humans confront the Xilian Regulator. Ozaki is revealed to be a "Keizer", an all-powerful being capable of controlling Earth. Deciding to stay with the humans, Ozaki fights the Xilian Regulator, who is also a Keizer. After an extended battle, the humans are victorious and flee the Mothership's destruction.

With Gigan and Mothra dead, Godzilla continues his battle with Monster X, who mutates into Keizer Ghidorah. Keizer Ghidorah initially has an advantage over Godzilla using lightning to overpower him, and it drains Godzilla's power through its teeth. Ozaki aids Godzilla by transferring some of his Keizer powers over to the monster and Godzilla prevails over Ghidorah. He then turns to attack the Gotengo, but a much larger Minilla arrives and calms his father. Godzilla and Minilla head back out to the ocean, as Godzilla turns and lets out one final roar.