In a dental clinic located in Tokyo, a perverted dentist targets female high school students returning from school, administering anesthesia during treatment to blur their consciousness and render them unable to move. Taking advantage of their helpless state, he performs sexual assaults—forcing them into open-mouthed blowjobs using a mouth gag, ejaculating semen inside their mouths. With assistance from a dental nurse who pins the girls down, he proceeds to violently penetrate them bareback and creampie them. These extreme acts, exploiting patients in a defenseless condition, have shocked many as malicious criminal behavior.