Women in their forties have become more sensitive than in their youth, reaching a state of arousal that can't be satisfied by their husbands alone. Their bodies are constantly wet, craving penetration. 44-year-old Kazuyo Misaki begins an affair with her husband's subordinate. One day, her husband brings the subordinate home after work but passes out drunk, leaving Kazuyo free to sneak the man into her bedroom for a secret tryst. 46-year-old Kozue Ichimura, a married woman seduced by a flirtatious home renovation salesman, exchanges passionate kisses and grinds against him uncontrollably. 43-year-old Yumi Saeki, persuaded by her husband to appear in an adult video, shows surprising boldness for a first-timer, clearly enjoying every explicit moment.