Accompanying her husband who started playing golf for business, her wife, Kana, also took up golf. However, her life took a drastic turn after meeting her husband's subordinate, Uchimura. A chance encounter led to a physical relationship with him. Overwhelmed by guilt towards her husband, she convinced herself it was a "one-time mistake" and distanced herself from Uchimura. Yet, she gradually succumbed to his young, forceful, and rough caresses. Thus, their secret relationship slowly crept into their daily lives.
