Miu, a married woman who lives with her son because her husband is assigned to work alone. One day she is told by her son's friend that she is being harassed by her son. The man, who took advantage of her dismayed attitude, forced her to serve by mouth. The story of harassment is a lie to trap her, but Miu, who does not know that, does not strongly refuse to act. However, she was frustrated and gradually became irrelevant to the truth of the story and became absorbed in the repeated radical affairs.