Hitomi Araki works at a massage parlor and gets drawn into a job where clients grope her breasts. Due to her inexperience, the manager gives her private after-hours coaching, and his skilled touch causes her body to react involuntarily. As their relationship deepens, she becomes entangled in increasingly lewd acts. Her husband visits her workplace and watches as she's fondled and fucked by a client right beside him. Amidst the tension and anxiety, she continues to writhe in physical pleasure against her will.