In the late Qing Dynasty of the mid-19th century Guangzhou is mired in corruption, poverty and crime. The Black Tiger gang, run by the ruthless Master Lei (veteran Sammo Hung), and the North Sea gang are pitted in a war for the control of the lucrative port. Wong Fei Hung (Peng, Cold War, Doze Niu’s Love) breaks into the Black Tiger gang and his skilled fighting quickly earns the confidence of Lei and he becomes his fourth “son.” Naturally, Wong has ulterior motives: similar thugs murdered Wong’s teacher/doctor father (Tony Leung Ka-fai) when he was nine. On top of that, Wong and his childhood friends Fiery (Jing Boran, The Guillotines) and Chun (Wang Luodan) are out to destroy the gangs completely as yet another gang, the Orphans, and bring justice back to the Guangzhou.