Hiroko Iwasaki (Sexy Mask) is a female teacher at Shuten Academy, a den of evil. She was fighting evil day and night to bring back love and freedom to the school. The evil hand of the dreaded Stallion Mask looms over the Sexy Mask! Fumihiko Kuroda a.k.a. Stallion Mask, impersonates a teacher at Shuten Academy and uses the students who worship Sexy Mask to capture her. Stallion Mask absorbs the energy of the Sexy Mask and he decides to let the weakened Sexy Mask toy for the students who are its followers as a shameful play.... The finishing touch is the sticky perverted play of the Stallion Mask, which makes the sexy mask ascend to heaven!