Nam Gi-joon, a former bandit who lived in the forest for 11 years, returns to the underworld of Seoul to punish those responsible for the murder of his younger brother, who made a career in one of the two largest gangs in the city. Shortly before his death, he quarreled with the son of the head of another clan, and now Nam Gi-joon will have to thin out the ranks of criminal elements slightly in order to get to the spoiled major and call him to account.