Behind a prestigious cram school lurks a dark network that forces high-achieving girls into prostitution. Unaware that their shameful acts are being recorded, the girls comply out of fear of bullying. Ordered to change into uniforms, a fair-skinned, black-haired schoolgirl obediently follows instructions. While molested by middle-aged perverts, she remains silent but lets out soft moans each time the man thrusts into her. After sex, the girl is tied to a chair in her school swimsuit, tormented with toys, crying out in pleasure as she writhes and reaches climax. Through this process, the girls' once-pure hearts gradually distort, leading them down a new path in life.