Fed up with a workaholic husband who ignores their home life, married Kaori satisfies her pent-up desires by having an affair with an ex-boyfriend. She remains close to her adult daughter Saki, and the family appears peaceful until Saki's boyfriend, Ippei, discovers the affair. He demands Kaori's body as the price of keeping her secret. Desperate to hide the truth from her husband and daughter, she submits to his every demand. From that day on, Ippei toys with her while guilt over betraying her daughter turns each encounter into fresh humiliation...