Young & Dangerous: The Prequel (1998)

This story occurs between the two opening sequences of the first "Young and Dangerous" film. Chan Ho-Nam, Chicken, Chou-pan, and Pou-pan join the Hung Hing Society and find that one of their own, Kwan, has betrayed them by allying himself with the Tung Sing Group, Hung Hing's arch rival gang.