Nina has been working hard to escape her troubled marriage by throwing herself into her job. However, every time she returns home, she finds herself caught up in another cold war with her husband. She longs to stay away but feels trapped. It's her coworker, Yoshiro, who manages to lift her spirits when he brings her coffee out of concern for her gloomy mood. Knowing that someone cares about her makes Nina happy, but she never expected him to confess his feelings... As she experiences the joy of being loved as a woman by her husband, Nina becomes increasingly consumed by the thrill of infidelity and betrayal.