Sayaka has a new robot called Venus A after Aphrodite A was destroyed along with the submarine Salude. The Mazinger Corps, Shin Million, Shin Baion, and Shin Daion was dispatched to confront the first wave of mechanical beasts. Inspector Ankokuji appears in the Photon labs and convinces Dr. Yumi to release the Photon energy. Back at the Kurogane house, Tsubasa explains the danger and the imminent return of Kenzo Kabuto. Dr. Hell appears as a hollogram to Kouji and Tsubasa and challenges Kouji into a one-on-one fight with Baron Ashura's new robot. The Mazinger Corps arrives and tried to stop Baron Ashura to no avail. Sayaka came with Venus A and used her Z cutters and cuts Baron Ashura's robot in half.
味方のロボット軍団もマジンガー軍団としてパワーアップ。さやかの新しいロボット・ビューナスAも完成!そして遂にDr.ヘルからの最終決戦への宣戦布告がなされる!
决战越发接近沙也加的新机体新阿佛洛狄忒A也已经完成了，不过由于沙也加的要求三博士决定要拍沙也加的裸照……在士郎的提醒下才知道新阿佛洛狄忒A早已完成了。这时敌人来袭的信号响起了，在敌人新兵器的攻击下军队完全崩溃了，连光子力机器人军团也全灭了。
