When an American submarine is mysteriously destroyed at sea- it can only mean one thing- Godzilla has returned!An investigative journalist meets a strange old man named Isayama who claims that, aside from Nuclear Energy; Godzilla is made up of vengeful souls from the Pacific War- and therefore cannot be killed by man made weapons. Isayama awakens the ancient 'Three sacred Guardian Beasts" - King Ghidorah (Water), Mothra (Air) and Baragon (Earth) and soon Godzilla faces an all out attack in a prehistoric battle of the beasts on a grand scale.