Nozomi Ishihara plays a boyish beauty who transfers to a new school dressed as a boy. However, while changing into her gym clothes, her secret beautiful breasts are revealed, and her true identity is discovered by a man with a strong sexual appetite in her class. In exchange for keeping her secret, she is forced into an extreme affair in the classroom after school. The cross-dressing beauty is driven to experience the joys of womanhood through intense "devil-pistoning," and with tears in her eyes, she accepts repeated creampies. Although she resists at first, she is eventually trained into an obedient female, begging for semen.