It has been two years since she married a coworker and left the company, but she and her husband still socialize with her former boss Arima and his wife. Seeing how overwhelmed her husband is with work, Arima suggests that the two couples take a hot-spring trip together. She eagerly looks forward to it, only for her husband to admit upon reaching the inn that he never wanted to come. They argue, and even after she takes a bath alone to calm down, he refuses to change his mind and suddenly announces that he is going home. Devastated that he once again chooses work over her, she drinks away her sorrow—and the man who stays by her side is Arima, leading them into an intimate affair.