Newly appointed teacher Hana Kotone begins teaching at an all-boys school, but after school one day, she is raped in the classroom by a student obsessed with her. This tragedy marks the beginning of a relentless series of humiliations, as she is treated like a mere masturbation device throughout the campus. Picked apart in various ways by the students, she is subjected to gangbangs and collective abuse. Highly sensitive, Hana is repeatedly brought to orgasm against her will by the insatiable desires of the male students. The film depicts extreme scenarios of toy-based torment, group deep throating, and creampie-filled foursome gangbangs, portraying the complete downfall of a once-proud and upright teacher into a sex slave and cumdump for the entire student body.