A powerful 3-in-1 robot, Getta Robo, is formed to defend humanity against the Megasaur Empire, a civilization of underground-dwelling dinosaurs, and its army of Mechasauruses.

Getter Robo
Mankind faces an existential threat from the Megasaur Empire, a technologically advanced dinosaur civilization residing in underground cities. Dr. Saotome develops Getta Robo, a dynamic robot created by combining three distinct vehicles.