In 1992, science fiction writer Kenichiro Terasawa is writing a book about Godzilla and learns of a group of Japanese soldiers stationed on Lagos Island during the Gilbert and Marshall Islands campaign. In February 1944, while threatened by American soldiers, the Japanese soldiers were saved by a mysterious dinosaur. He theorizes that the dinosaur was subsequently mutated into Godzilla in 1954 after a hydrogen bomb test on the island. When a UFO lands on Mount Fuji, the Japanese army investigates. The visitors, known as the "Futurians", explain that they are humans from the year 2204, where Godzilla has completely destroyed Japan. The Futurians plan to travel back in time to 1944 to remove the dinosaur from Lagos Island before the island is destroyed, thus preventing the mutation of the creature into Godzilla. But the truth behind their mission is that, in the future, Japan is an economic superpower that has surpassed the United States, Russia, and China. The Futurians traveled back in time in order to change history and prevent Japan's future economic dominance by creating King Ghidorah and using it to destroy present day Japan.