When an only child is struck by a car and dies, the child's mother seeks vengeance against the driver in this thrilling drama. The car was driven by the wife of a company president who is having an affair. The woman's husband manages to buy silence about the incident, but the victim's mother discovers the identity of the driver. After she secures a job in the home of the company president and his philandering spouse, the woman plans to murder the couple's son when he reaches the age of her late son.
Tashiro coincidentally meets his best friend Sugimoto in a bar very close to the apartment in which Sugimoto’s wayward wife is found dead. Although Tashiro is not a suspect in the police investigation, he is racked with guilt and confesses to his wife, Masako. In an effort to further relieve his tortured sense of guilt, he then confesses to Sugimoto. Neither his wife nor his friend can believe that he could have been involved.
