Mazinkaiser: Shitou! Ankoku Dai Shougun

The Mycenae Empire erupts from beneath the Earth under the Great General of Darkness, unleashing seven armies of Warrior Beasts in a sudden assault on humanity. The Mazinger forces are overwhelmed as cities fall and the invasion spreads with terrifying speed.

Archduke Gorgon hunts Koji Kabuto before he can reach Mazinkaiser, knowing that the machine may be the one weapon capable of turning the tide. With his allies pushed to the brink and the enemy closing around Mount Fuji, Koji must reach Mazinkaiser and face a battle against an army built to crush everything in its path.