“I'll give you a special thank-you, so let's exchange numbers.” Yuko is a beautiful, wholesome-looking married part-timer and the workplace favorite, admired by customers for her skill and charm. Behind that innocent image, however, she is insatiably promiscuous and begins an affair with coworker Matsuda. Once he realizes the married woman he worshipped will come whenever he calls, he treats her as his personal sex toy and creampies her whenever he pleases.