In this story, we follow Nel, a cross dresser trying to enter a prestigious all-girls school by hiding her true identity as a man. However, when she undergoes a physical examination at the school clinic, her secret is exposed, and she finds herself at the mercy of the teachers. They use BDSM techniques to train her, enlarging her breasts with a suction device designed specifically for females. Despite being punished, Nel becomes aroused, leading to further humiliation. Her anal opening is stretched using a large dildo while she's bound spread eagle on a bench, causing multiple orgasms. As a result of her submission, Nel becomes a masochist and is used as a sexual plaything by the teachers, proving that even in the most unexpected places, there are those willing to explore their darkest desires.