The Shinjuku police station's detective Ao, who had been tracking a drug dealer for half a year, was caught by a man that appeared suddenly. The problem is that Ao inhaled some of the evidence by accident. A young man by the name of Noe helps Ao, who has lost consciousness after the fact. Ao is reprimanded by his boss and receives sarcastic remarks from his co-workers. At that time, Ao receives a photograph. That photograph shows a dead Naji, who was Ao's S. It's hunt or be hunted; eat or be eaten… The heated race of the yakuza men.