Middle-aged wives agonize over their first-time affairs, only to be overwhelmed by uncontrollable pleasure. 41-year-old Satsuki Kirioka, married for over four years, gets heavily drunk and is fiercely attacked by a younger coworker in the office, climaxing intensely. 40-year-old Suzuka Yabuki, luring a coworker she's attracted to into the company changing room on her day off, discovers a vibrator in the locker and ends up performing masturbation while being seduced. 42-year-old Konomi Misato changes from casual clothes into work attire, saying, "Just thinking about cheating at work turns me on," and enjoys sweaty sex to the fullest. The cheating scenes of these women in their forties perfectly match with lewd fantasies. Each woman's desires and emotions make the atmosphere even hotter.