Widowed at a young age, Rie masturbates every time she remembers the passionate nights she shared with her husband. Even though she knows it's wrong, she ends up having a physical relationship with her former boss, Noda, who is married with children. Misa, a senior at her workplace, encourages Rie, who is confused by her affair, to be honest with herself.

Although their married life is going well, Noriko and Daisaku are starting to have differences when it comes to their sexual activities. One day, Daisaku's father, Yusaku, shows up. Noriko doesn't like Yusaku, who is known for sexual harassment. Daisaku is infatuated with Mizuho, ​​a door-to-door saleswoman, and when Noriko returns to her parents' house...