A homeroom teacher beloved and trusted by students for his kind, approachable demeanor. But beneath that facade lies a twisted, perverted instructor obsessed solely with having sex with his pupils. He invites students to his home under the guise of tutoring, pretending to teach them diligently. In secret, he gropes their crotches whenever he gets the chance, testing their reactions. His actions lead students into dangerous territory, escalating into full-blown sexual encounters. Stimulated by one student's unexpected large breasts, he spirals further out of control. His lust even extends to his younger brother living with him, resulting in a depraved sibling duo engaging in relentless "tag-team" sex. A shocking web of relationships unfolds between teacher and student, and between siblings.