``Aika'' was raped several decades ago, and soon after that, her husband died in an unexpected accident, and her life was thrown to the lowest point. She gave birth to a disadvantaged child, Momo, and raised her beloved child with care all by herself. However, her busy mother and her adolescent daughter have different lives. The person who saw the mother and daughter on the street and grinned was the rapist from that time. Intuitively, he realizes that she is the woman he raped, and identifies their house... The nightmare appeared before my eyes again. A strange family formed in despair.