During the school soccer game, the cheering squad rebels against its captain, Ryo, and threatens to quit. To keep her squad together, Ryo accepts a challenge from her squad members. The first challenge is to keep cheering perfectly while having a sex toy inside her the whole time. However, the challenges keep getting worse. Ryo is sexually assaulted by the cheerleading squad. She is forced to agree to group sex with the rugby team. Will Ryo be able to complete the challenges? Will she be able to keep the team together, and remain the captain?

In a dark, empty school building, Kiriko is bound and gagged, wearing only her underwear. In front of her, there are three men wearing masks. They tell her, "I want to see your body drown in pleasure, and your face contort in ecstacy." These men had much experience with other female teachers. They would continue their perverse assault until their prey cried out in ecstacy. However, Kiriko is a strong-minded, marital arts expert. Two of the men were already lying wounded in the nurse`s room. As Kiriko threatens to turn the men into the police, her epithets start to excite them. They tell her that if she can stand the men playing with her pussy for ten minutes without getting wet, she can go. As they play with her body, her mind and reason dims in a wave of sexual pleasure....

Late 20th century, during a time of rampant social corruption, a criminal market in human sex slavery has become increasingly common. The Japanese government created a specially trained task force to combat these crimes. (Source: AniDB)

Four friends at school. Three of them get caught up in having sex with older men. Two of them prostitute themselves to a middle-aged man while the other girl is caught masturbating at her teacher's desk. Do these girls really know what they've getting themselves into?