Great Mazinger, a popular manga and anime series, picks up where the successful story of Mazinger Z left off with the latter's defeat. As the new lead, Tetsuya Tsurugi takes control of the mighty Great Mazinger, a creation of the late Kenzo Kabuto, who was believed to have passed away. Kenzo Kabuto was Koji Kabuto's father. The Mycene Empire and their robust robots are the new foes this time around.