Married woman Noriko Kawamura was known not only for her beauty and figure but also for her innate masochistic tendencies. She took pleasure in being forcefully toyed with by strange men and enduring harsh treatment, as such acts brought her ultimate pleasure. However, after marriage, her once thrilling life settled into quiet domesticity. Seeking relief from the monotony of daily life, Noriko purchased adult toys and one day became absorbed in masturbation while waiting for a delivery. At that moment, the delivery man arrived and noticed the aroused contours beneath her clothing, instantly overwhelmed by a surge of lustful desire.