In 1993, an asteroid lands in the Ogasawara Trench and awakens Godzilla. Explorer Takuya Fujita is detained after stealing an ancient artifact. Representative of the Japanese Prime Minister offers to have Takuya's charges dropped if he explores Infant Island with his ex-wife, Masako Tezuka and Kenji Ando, the secretary of the Marutomo company. After the trio arrives on the island, they find a cave containing a depiction of two giant insects in battle. Exploration leads them to a giant egg belonging to Mothra, called Cosmos. The Cosmos explains how the asteroid uncovered Mothra's egg, and may have awoken Battra, who is still embittered over humanity's interference in the Earth's natural order.