The latest spin off from Go Nagai\'s legendary super robot show Mazinger Z! During a recent battle with Doctor Hell\'s mechanical beasts led by half man, half woman Baron Ashura, Koji Kabuto, pilot of the Mazinger Z, is defeated, resulting in the taken of his precious robot. When all looks grim at the lab, Kouji returns in the Mazinkaiser, the most powerful robot to ever be seen. But where did it come from? What powers does it hold? And can it really lead to Doctor Hell\'s destruction and peace for the world?