Certain kill!! Giant swing Rocket Punch

Synopsis

Grand Duke Gorgon issues a formal declaration of war against Mazinger Z and sends in the powerful Mechanical Beast Apollon A1. Meanwhile, at the Photon Power Laboratory, the rush to finish the Big Wheel Rocket Punch is on. Neither the regular Rocket Punch nor the Breast Fire works on Apollon A1, and, with no way to fight back, the Iron Cross Corps from the flying fortress Gool begins its landing operation. Just when all seems lost, the three doctors finally complete the Big Wheel Rocket Punch!