Miku Arima stars in her first bondage production as an adult uniformed-student role-player. Three months after transferring, she fits in with her class but cannot share the desires that drive her to read BDSM comics and masturbate while tying herself up. One day she sees her adult teacher role-play partner entering a BDSM club, discovers his interest, and asks him to train her. Relentless bondage and discipline squeeze her innocent-looking body and awaken her into an even more devoted masochist.