A schoolgirl hoping to earn money for a gift to her crush turns to compensated dating. Lured to a man's home, she becomes subjected to intense bondage and training. Enduring relentless and extreme forms of stimulation and erotic torment she's never experienced before, the girl is forced to climax repeatedly. Awakening to her masochistic desires, she loses all awareness as her vaginal muscles tighten and her womb absorbs his semen. Forgetting her original purpose, she vows to become his sex slave.