Kana Miyashita, a sports instructor working at a gym in a small town. Her husband's relationship had cooled off, but she was hiding this fact from her neighbors. One day, a middle-aged man named Ichiro starts going to the gym after being introduced by a lady in the neighborhood. As days go by, Kana, who is attracted to Ichiro, seduces him with her tight body. And as their affair unfolds in the town, Kana and Ichiro feel a sense of guilt and get deeply involved….
