Brief Story Line
Nam Gi-jun (So Ji-sub - Alienoid: Return to the Future, Oh My Venus TV series etc) used to work for the two largest gangs in Seoul, i.e. Joowon led by Lee Joo-woon (Heo Joon-ho - Dark Nuns, Bloodhounds etc) and Bongsan led by Gu Bong-san (Ahn Gil-kang - Sweet & Sour, A Shop for Killers TV series etc). After a major incident 11 years before, Gi-jun left the organization and became normal person, while his younger brother Gi-seok (Lee Joon-hyuk - The Firefighters, Our Beloved Summer TV series etc) became second in command in Joowon since Mr. Lee's only son Geum-son (Choo Young-woo - Oasis, Trauma Code TV series etc) worked as a Prosecutor. On the other hand, Bong-san's only son Jun-mo (Gong Myung - Extreme Job, Be Melodramatic TV series etc) who was supposed to take over the Bongsan organization was making a lot of trouble that worried his father.