It helps to know the background of Mazinger before watching this film since it starts in the "present" without any real review of past events. If you didn't watch at least Mazinger Z, you might be confused coming in cold into this film.

The film begins roughly 10 years after the events of the Great Mazinger TV series. Koji Kabuto has retired from being a pilot and is a top scientist at the Photon Research Lab. His mecha, Mazinger Z, has been retired and is on display at a local museum.

Through a freak of nature or back-up plan, his archfoe, Dr. Hell, returns from the dead with an army of mecha-monsters to destroy the world. Koji Kabuto is forced back into action with the last super robot that can defeat Hell's Mechanical Monster Army.

The mech battle scenes are very well laid out and the action rarely lets up. Mazinger Z has never looked better on film and the music is great! Fans of Go Nagai, giant robots, and Mazinger Z should find something to enjoy in this movie!