Under the mind control of the Spellmen aliens, Hyper Mammy falls to evil and seeks to destroy Earth. Once a human member of the Hyper Defense Force named Minami Mikumo, she now faces her former comrade. To save her, Hyper Mammy, borrowing the body of defense officer Yuki Anna, infiltrates Earth to rescue the corrupted Dark Mammy. As the original Hyper Mammy, she confronts her fallen self, entering her psyche and managing to break the brainwashing. However, the Spellmen alien, swearing revenge, returns to Earth alongside their ally, the Spartan alien... [BAD END]