Sachiko, the niece, pays a long-awaited visit. Even after marriage, her figure remains stunning, and she has blossomed into an irresistibly attractive woman. The reason for her sudden arrival? Dissatisfaction with her husband—marital relations have all but disappeared. At first, he suspects she's merely searching for something to fill the void, but her true intentions run far deeper, far more seductive. This is no simple visit for a change of pace; it's the beginning of a new, intense development. As her real motives come to light, the tension mounts steadily, inevitably.