Short-haired schoolgirl Yuri is troubled by her lack of femininity. Her homeroom teacher, Tsubasa, takes advantage of her vulnerability, teasing and dominating her with cruel traps. One day, unable to hold her bladder during one of Tsubasa's long lectures, Yuri accidentally wets herself in front of her. Seizing this weakness, Tsubasa forcefully invades Yuri's mouth with her tongue, overwhelming her with a dominant French kiss. She then lures Yuri to her home, making her squirt repeatedly through cunnilingus and handjob. Awakening to her own desires, Yuri falls deeper into Tsubasa's control, and their intimate relationship grows increasingly intense.