Tae-sik, a member of the Six Sons group, dreams of becoming a boss. He blames him for his mother's death because of his older brother Do-sik, but Do-sik helps him without his brother's knowledge. When one or two members of the organization disappear, the boss suspects his rival Jaryongpa and gives Taesik a mission. Meanwhile, in the police, Detective Lim and a rookie detective team up to investigate the case.