In response to Japan's request for a countermeasure against Godzilla, UN engineers construct Mechagodzilla, a giant robotic version of Godzilla. Nonetheless, Godzilla proves himself a force to be reckoned with…

Forty-two years after her first visit in Tokyo, Mothra returns to warn mankind that they must return Mechagodzilla, along with Godzilla's bones, to the sea, for the dead must not…

When Mothra went into outer space to stop a meteor from reaching Earth, she accidentally took with cells from Godzilla and remaining cells from Biollante that inhabited our atmosphere. The…