A 32-year-old demure housewife lives with her 47-year-old husband, a foreign company employee, but secretly harbors desires for an affair. To fulfill this longing, a handsome male actor visits her luxury apartment after her husband leaves for work. Welcomed into the spacious 75-square-meter 1LDK unit, we meet the seemingly modest Ryoko Majima (32). Though she had always hesitated about cheating, the sight of the attractive actor unexpectedly flips her into full erotic mode. As clothes come off, it's revealed she's surprisingly well-endowed—her slender frame concealing a voluptuous bust that instantly captivates the actor. Unlike her husband, the actor's skillful, precise techniques quickly draw the married woman deeper into pleasure, awakening desires she never knew she had.