Newly appointed teacher Kasumi decides to visit the home of her student Gaku, who has been refusing to attend school. Gaku had previously caused an incident at school and was essentially abandoned by the school staff, but Kasumi defies opposition from her fellow teachers and insists on making the visit. Upon arriving, she is welcomed into Gaku's home, where she is served tea laced with a substance that induces unconsciousness. As the drug takes effect, Gaku's father, Jo—a yakuza boss—appears alongside his gangster underlings. They proceed to gang rape her in a brutal bukkake assault. The story portrays Kasumi's helplessness and inner turmoil as she struggles to maintain her dignity and identity as a teacher while being subjected to extreme humiliation and violation. Her psychological fragility becomes increasingly evident amid the tension and fear of the situation.