Depressed and in debt, Santoshi tells his young daughter that he is going to find an infamous serial killer and collect a reward. However, when Santoshi disappears without a trace, she starts to fear the worst and begins searching for him.
A pair of siblings are living together in the outskirts of society. The brother, Yoshio, has a hurt leg, the sister, Mariko, has an intellectual disability and spends most of her time at home. When Yoshio loses his job he does the unthinkable and sells his sister's body in order to pay for food and rent.
Following the brutal rape and murder of his teenage daughter, a single father seeks revenge against the responsible youths. His pursuit for justice becomes a deadly cat-and-mouse game with both the perpetrators and the police.
