Getter Robo Arc is the fifth chronological Getter Robo series. Earth has become a post-apocalyptic world some years after Getter Robo Go. Professor Saotome's creation, Getter Robo Arc, has been finished by Hayato, now an aged scientist. Takuma, Ryoma's son, Kamui, a human-dinosaur, and Baku, Tayel's younger brother, are piloting it. They battle with the restored Dinosaur Empire against the insectoid Andromeda Flow Country, which attacks from time and space.