In the late 1800s, the martial arts fighter Ah Sahm becomes entangled in the fight for dominance between the Chinese crime syndicates in Chinatown.
As Young Jun and Ah Sahm prepare to strike a top-secret deal by meeting mysterious figures, threats mount and confront everyone as the warriors try to maintain their status.
In the wake of the Chinatown riots in season 2, Mai Ling uses her connections with the government to consolidate her power, while Ah Sahm and the Hop Wei tong must find new ways to survive.