Kana, the wife, starts playing golf to accompany her husband who has just started entertaining clients, but her life changes completely when she meets Uchimura, a subordinate her husband brings home. She ends up having a physical relationship with him by chance. Feeling guilty towards her husband, she tells herself that it was a one-time mistake and distances herself from Uchimura. However, she gradually becomes addicted to his intense and rough caresses, which he approaches with his youth and energy. And so, their secret relationship slowly begins to creep into their daily lives.