Mazinger Z tai Ankoku Daishogun

Kouji and his friends take a break after defeating Dr. Hell, but a mysterious prophet warns of an impending threat. Unfamiliar mechanical beasts begin appearing globally, causing destruction. Kouji and his Mazinger Z must confront this new danger, though they face overwhelming odds. The film connects the Mazinger Z TV series with the Great Mazinger TV series, introducing Great Mazinger and the enemies from the Mikene Empire to the audience.