Godzilla vs. King Ghidorah

Terasawa, a young Japanese reporter is covering a story of a dinosaur sighted during Pacific War. Then a spaceship appears in Japan, coinciding with Godzilla's awakening in the ocean. The ship lands, and three humans--Two western men Wilson and Grenchiko and one Japanese young woman Emi--come out of the ship and reveal themselves as delegates of nations of year 2204. They make a time travel to warn Japan of the grave future; due to industrialization and nuclear power, Godzilla will reappear and destroy Japan for good, or so the Futurians say. They also present books that Terasawa would write in the future, which say the dinosaur he is covering is Godzillasaurus, the dinosaur that would become Godzilla after radiation exposure of a American nuclear testing after World War Two.

Terasawa and several Japanese civilians and military personnel are selected by the Futurians to go back to 1944 and delete Godzilla from history, thus preventing Japan's bleak future. Futurians have Emi and an android named M11 to pilot a time traveling shuttle to complete the mission.

Futurians and Japanese of 1990s come to a Pacific Island named Lagos in 1944. Amid the final stage of Pacific War, a Japanese unit was opposing an US amphibious landing of the island. The time travel group secretly observe the battle. The Japanese unit was almost eliminated by the US landing unit, but the Godzillasaurus, a T-Rex-like ordinary animal, came and killed American soldiers. US ship fired, heavily injured the Godzillasaurus and left. The remaining Japanese unit saluted to the injured Godzillasaurus and left, too. Then Futurians teleport Godzillasaurus to the Bering Sea and go back to the future.

Unbeknownst to the Japanese, however, the Futurians replace Godzillasaurus with three genetically engineered creatures called Dorats, who then were exposed to radiation of the nuclear test and mutated into the three-headed, dragon-like King Ghidorah, who appears in present Japan. It is then that the Futurians' true malevolent intentions are exposed: The story they tell Japanese of 1990s is a lie. The true history of the future is that despite damages by Godzilla, Japan with her giant corporations would grow into a super power that affect the future world greatly; King Ghidorah is a controlled weapon Futurians made to damage Japan further, in order to keep her from becoming a super power. However Wilson and Grenchiko are more ambitious. They want to use King Ghidorah to delete Japan from history completely. Emi disagrees with that. She reprogrammed M11 and leaves the mother ship to tell Terasawa the truth.

Terasawa and others then seek out Godzillasaurus to create a new Godzilla, who is the only force powerful enough to defeat King Ghidorah and the Futurians. They borrow a nuclear submarine from Shindo Heavy Industry, a successful giant corporation established in post War Japan by Shindo, a former officer who was saved by and saluted to then injured Godzillasaurus on Lagos Island.

Unbeknownst to the Japanese or Futurians however, is that the past had not been changed at all, but fulfilled. The Godzillasaurus they had transported in the Bering sea was not the same that mutated into the Godzilla that attacked Japan in 1954. An old newspaper article recounting an accident in the Bering sea involving a nuclear submarine explains the origins of the second Godzilla. The Japanese realise this too late, as the sub they sent encounters an already mutated Godzilla, still recovering from the Anti Nuclear Energy Bacteria he was exposed to in Godzilla vs. Biollante. Godzilla attacks the sub and absorbs its power, purging his system of the bacteria and becoming even larger than before.

Wilson and Grenchiko sent Ghidorah to combat it ashore in Hokkaidō. Ghidorah almost strangles Godzilla to death, but at mean time Emi, Terasawa and the android sabotage the mother ship. Ghidorah' motion is affected and then it is defeated by Godzilla. Godzilla decapitates its middle head, and has it sink into bottom of the sea. Emi and others teleport the mother ship in front of Godzilla and leave. Godzilla destroys the ship along with Wilson and Grenchiko onboard.

Godzilla then sets out to ravage Japan. Emi and M11 go back to future with the time travelling shuttle for help. Godzilla enters Tokyo city and stands before the headquarter of Shindo Heavy Industry, where Shindo himself stays to wait for Godzilla. Shindo and Godzilla look into each other's eyes for a moment and Godzilla destroys the Shindo headquarter completely. Then Emi comes back from future with resurrected King Ghidorah. King Ghidorah is cryopreserved in the sea to 2204, when Emi and Futurians make it a cyborg under Emi's command: Mecha-King Ghidorah. Emi uses it to subdue Godzilla and sinks them both into the sea. Then Emi says goodbye to Terasawa, one of her ancestor, and goes back to future. In the end on the bottom of the sea, Godzilla awakens and roars again.