Moeko Shiraishi, a student at Hypermedia Academy, wears an eye mask to hide her identity and is called "Gishigishi Purun" by everyone, fighting for peace on campus. - Today, Hiname Aikawa, a student, is in trouble with her perverted teacher, Hattori, and she comes to her aid. - One day, a new physical education teacher who wears a mask and calls himself Strong Mask is appointed and fights with Gishi Gishi Purun, but suffers defeat. - Later, her student Hiname Aikawa is caught, and Gishigishi Purun rushes to the ring in the warehouse to help her. - What appeared there was a physical education teacher, Hyper Strong Mask, a cyborg of Strong Mask that should have been defeated. - Gishi Gishi Puru, who fights against cyborgized enemies, is completely useless. - After his true identity is revealed, Gishigishi Purun faces the worst possible ending... - [BAD END]