A boy named Kirino transfers into the class of Shizya, and his mother Kasumi (Kasumi Hoho) starts giving him her used underwear. One day, Kasumi makes a mistake with Kirino and is recorded by him, then blackmailed. Kirino runs an escort circle for boys, even forcing Shizya to service unsatisfied female customers, the bespectacled woman (Reiko Koba), and Chiharu (Mizuzawa). Kasumi too is filled with the boys' semen and transformed into a lustful woman...
