Marie is a young wife who married a much older man. She hopes to build a good relationship with her adult stepson Naoki, who is close to her own age, but nothing seems to work. Desperate for advice, she turns to Naoki’s friends and learns something unexpected. That night, Marie talks with Naoki in his room. As he tells her how lonely he has felt growing up with only one parent, she is swept along and gives in to his twisted desire. But it was all a trap arranged by Naoki. With compromising leverage now hanging over her, Marie cannot tell her husband and has no choice but to obey...