 Masato, a seemingly typical high school student, has his life turned upside-down when he is suddenly arrested without explanation, after which his parents show up and tell him they aren t his real parents, but actually, government employees paid to pose as his mother and father. He later learns that he had been selected (apparently a long time ago) to be the pilot for a giant fighting robot called the Zeorymer. His assignment is to fight Hau Dragon, the shadowy organization that built the Zeorymer, along with seven other robots they still control.