Mio is troubled by her husband's fading affection. On a friend's advice, she decides to try an oil massage esthetician service, hoping to become beautiful again and regain her husband's love. However, when she arrives at the clinic, she is greeted by a therapist with an eerie presence. With strange, skillful hands, he begins tormenting her nipples and breasts. Surprised by his lewd techniques, Mio trembles as pleasure gradually overwhelms her body. Feeling a man's touch for the first time in ages—and overwhelmed by the intense stimulation—this pure, virtuous big-breasted married woman slowly begins to transform into a lustful, sensual being.