A new star appears at the edge of the cosmos, and a terrible roar spreads through the universe, shattering its peace. Alfred, a greedy bionic human, has taken over Antarichi, a peaceful and perfect planet, and defies the beliefs of his creator Casiofia by setting out to conquer the universe. His first goal is to wipe out the city of Orion. Shocked and unable to fight back, Orion's King Kanann sends SuperSpeeder to Earth to find help. SuperSpeeder reunites with Mazinger 7 and a band of courageous warriors, and a savage battle against Alfred begins in this science fiction film.