Yuka is about to marry the man she loves and fulfill her dream of becoming a teacher, but her promising life collapses when the supervising teacher at her placement proves to be a sadistic sexual predator. He secretly doses her daily drinks with aphrodisiacs that gradually overwhelm her body. She tries to suppress the urges, only to lose control and touch herself. Once he catches her, he forces his cock inside. She hates it and knows it is wrong, yet her mind and body begin craving sex and cock at all hours. Drooling and spraying juices, she becomes aroused by the knowledge that she is cheating, increasingly consumed by the middle-aged teacher instead of her fiancé.