Set in 1988 in Hiroshima, Japan, prior to the enactment of the anti-organized crime law. A rumor exists that Detective Shogo Ogami has ties with the yakuza. He is partnered with Detective Shuichi Hioka and they investigate a missing person case involving a financial company employee. Conflicts between opposing yakuza groups become more serious.

After Shogo Ogami’s death in Hiroshima, Detective Shuichi Hioka successfully implemented Shogo Ogami’s plan, which was to control the yakuza to prevent further gang wars and save innocent people from getting harmed. Shuichi Hioka manages the criminal organizations, but, due to one evil person who gets released from prison, the situation drastically changes.