Dr. Hell has resurrected an ancient army of mechanical monsters to conquer the world, but first he has to destroy the photon power lab and the one thing standing in his way: Mazinger! But it's going to take more than defeating Mazinger for Dr. Hell and his evil henchman Baron Ashura to clear their way for world domination, because there's a new kid in town, and he packs quite the atomic punch! Can Young Koji Kabuto, as the runner behidn the amazin Mazinkaiser, deal out the thunder faster than Dr. Hell's army can take it?