Kanae Sekiguchi's bathhouse, Tsuki no Yu, has now reopened. However, her husband Satoru has been missing for four months since he left for a business trip. He vanished without a trace, leading Kanae to consider two possibilities: a secret affair or an accident, though she leans more toward the idea that he is out committing adultery. Satoru's company, The Public Baths Union, assists Kanae in running the bathhouse by sending Mr. Hori as an assistant. As Kanae manages the bathhouse duties, she is inundated with appointments that might help her uncover the truth behind Satoru's unexplained disappearance.