Fumie is living a happy life surrounded by her beloved husband and son. My son who is enthusiastic about studying often invited his best friend Takashi to his house and worked hard to study together. Fumie looked at such a situation with a smile, but... One day, Takashi had to wait at home alone for his son who was late coming home, and when he went to bring him a drink, Takashi suddenly changed and was raped. Fumie cannot hide her turmoil from the shock. However, from that day on, Takashi often visits his son, and finally the day his son is absent...