A construction company is tearing down the forests of Hokkaido for a land development. The chief encounters a strange piece of metal and removes it from a stone it was engraved in. But he doesn't realize that he has opened the seal that had trapped a giant monster, Desghidorah. This three - headed titan is able to draw energy by sucking the life force of the Earth. It's up to Mothra to stop this terrifying monster of doom.