Tetsuo Tosu never expected his daughter, Reika, to be a victim of domestic violence. Suspecting that her yakuza boyfriend, Nobuto Matori, is the perpetrator, Tetsuo decides to investigate him and his associates. But as he searches for evidence at Reika's apartment, the father learns that his daughter is not the first victim and that a worse fate awaits her. When he is discovered by Nobuto, Tetsuo ends up killing him in the ensuing fight. Assisted by his wife, Tetsuo hides the body in fear of retaliation from the yakuza. To add to the misfortune of the Tosu family, Nobuto happens to be the son of the mafia's head. Considered to be prime suspects behind Nobuto's disappearance, Tetsuo and his wife will have to deploy all their ingenuity to protect their daughter from the yakuza and their ruthless investigation.

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