![Godzilla vs. Megalon](https://image.chilimovie.com/region2/en/300px/20230702/au8CGZeCjgoxHe33gZWO0DDvndL.jpg)
Inventor Goro Ibuki creates a humanoid robot named Jet Jaguar. It is soon seized by an undersea race of people called the Seatopians. Using Jet Jaguar as a guide, the Seatopians send Megalon as vengeance for the nuclear tests that have devastated their society.