Skateboard Kids is a group of five boys and girls who love skateboarding. One day, member Mika Doyashiki receives a letter threatening to blow up the Tokyo Dome. Mika's father used to be a private investigator, but since he is absent, her children start searching alone. They found the explosives, but the culprit took Mika hostage. Lab Chienji, who tried to help her Mika, transforms into a skateboarder and saves her. The reason for the transformation is that Ken's father mistook Ken's skateboard for a passerby and brought it home, which was a "power board" and a secret weapon for world domination controlled by the criminal organization "Red Fox". Street riders who are targeted to get back the "power board". The time has finally come for Ken and the red foxes to confront each other.