Rules of the Gangs (2001)

Hwang Taek-geun, the godfather of the night world, is a man of strong sympathy and loyalty. O Ya-bung and Hwang Tae-geun, who were respected by gangsters, are attacked and killed by unknown men one day. Jo Ki-pyo, who has grown up with the love and trust of Taek-geun Hwang, is saddened by the death