As soon as her husband enters the bath, the married woman Yui slips out, hurriedly making her way to "where he's waiting," as if evading the eyes of the world. By day, she's a serious part-time housewife. But when night falls, she secretly leaves her home, wetting her pussy in anticipation, to meet her younger lover who she can only see after dark. This is the story of a passionate and sensual affair between a married woman and a young man, hidden from her husband and neighbors alike... .