In this Japanese sci-fi fantasy, the gigantic lepidopteran Mothra returns after battling it out with King Kong. Now he has become the god of a remote island. He is administered to by the tiny twins, the Peanut Sisters. Trouble ensues when Godzilla appears and the Peanuts attempt to invoke their deity to save the island. The elderly moth attempts to stop the great reptile, but Godzilla and in a blaze of fiery breath, destroys the enormous insect. Later, a giant Mothra egg being exhibited at a traveling circus, hatches and two larval Mothras begin encasing Godzilla in a sticky cocoon to avenge their parent's death.