China lives with her husband in an apartment owned by her father-in-law. She dreamed of a happy family with her husband, but contrary to her ideals, her husband was busy and they were not having children, which left her feeling lonely. At that time, her father-in-law began to visit the house for various reasons and sexually harass her, and China could not hide her confusion. One day, after days of not being able to tell her husband about the sexual harassment, her father-in-law sneaks in and sees her masturbating. This was the beginning of a typical tragedy.