![Sarkar](https://i0.wp.com/themoviesdb.com/wp-content/uploads/2025/01/rxruLUuejw1By5KMZVbhN8VJv9O.jpg?resize=185%2C278&ssl=1)
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.