Astronauts Glenn and Fuji investigate Planet X and encounter mysterious aliens known as the Xiliens, who ask Earth's people to help save their world from "Monster Zero". In exchange for borrowing Godzilla and Rodan, the Xiliens offer a cure for cancer. As Glenn investigates, he develops a romance with Miss Namikawa and uncovers the Xilien's true intentions.
In comic Woody Allen's film debut, he took the Japanese action film "International Secret Police: Key of Keys" and re-dubbed it, changing the plot to make it revolve around a secret egg salad recipe.
During World War II, a shot-down American pilot and a marooned Japanese navy captain find themselves stranded on the same small uninhabited island in the Pacific Ocean.
