A schoolgirl's everyday life begins to unravel due to prank emails, leading to repeated assaults on Marina and Tondoka. Among them, Marina is raped by both Tondoka and others, experiencing profound fear and humiliation. Next targeted is Yui. Her body and spirit, trained through three years of competitive swimming, prove powerless against male violence. Held down and helplessly exposed, the misery leaves deep psychological scars on these girls.