Ah Sahm makes a bold sacrifice to protect Yan Mi, Mai Ling reckons with the consequences of her actions, and Leary reaches his breaking point.

Ah Sahm, Young Jun, and Hong travel with Vega to Rooker’s Mill, a U.S.-Mexico border town owned by Elijah Rooker, the wealthy host of a lucrative fight tournament that Ah Sahm is determined to win. As he learns more about Vega, Ah Sahm draws the attention of another fighter, Dolph, and later, Rooker himself.

Transporting precious cargo via stagecoach through the Sierra Nevada, Ah Sahm and Young Jun are forced to spend the night with three strangers at a frontier saloon in the middle of nowhere. The detour turns perilous when Harlan French, a notorious outlaw, shows up with his henchmen, looking for a lucrative payday.

Ah Sahm rejects his warrior roots and retreats into the netherworld of the Chinese working class. A guilty Big Bill stands vigil for Lee at the hospital. With the police roughing up tong members in retaliation for their violence, Zing and the Fung Hai make a show of force to compel Mai Ling to honor her partnership. Burned by Buckley, Leary decides to take matters into his own hands at Mercer's factory. Seeking to snap Ah Sahm out of his funk, Chao shares a harrowing story of personal hardship. Ah Toy preaches a not-so-ancient message to Ah Sahm: In the middle of chaos lies opportunity. Season One Finale.

Change is afoot for the Hop Wei after Father Jun, Ah Sahm, and Young Jun face off. Ah Toy decides that Nellie may be the answer to her problems and takes matters at a sadistic rival brothel into her own hands. Leary is urged by both Buckley and Sophie to utilize his political influence. Just as his heroics are trumpeted, Bill is faced with another swordsman murder. A fatal clash unfolds at the Blake household.

With their new enterprise going well, Young Jun shares his worries with Ah Sahm about the new men Father Jun has brought over from China, and later, the partners are impressed by Hong, an enthusiastic recruit with a secret. Meanwhile, Chao goes to Mai Ling for help keeping Zing away from his business, Sophie grows closer to Leary, Nellie’s politics raise questions from her peers, and things take a deadly turn at Bill’s home.

As Ah Sahm and Young Jun struggle to produce authentic bills, they get valuable printing advice from an unexpected source.

While taking menacing steps to secure Nellie's land, Strickland instills confidence in Leary's political abilities.

In the wake of Father Jun's injury, Young Jun steps up for the Hop Wei. Leary struggles to smooth over rising working-class tensions.

San Francisco, 1878. Ah Sahm, a newly arrived Chinese immigrant with serious fighting skills, is introduced to Chinatown’s most ruthless tong, the Hop Wei, by Chao, a fixer. After impressing Young Jun, son of tong leader Father Jun, Ah Sahm is branded and taken to a brothel, where he befriends Ah Toy, a courtesan with connections.

Back with the Hop Wei, Ah Sahm spends his nights at the Barbary Coast fight pit, confronting a new anti-Chinese group, Teddy’s Boys. While Ah Toy accuses him of just looking for another fight, an empowered Mai Ling worries about her brother’s next steps. Meanwhile, Bill finds it hard to break out of his role as enforcer for Zing; Penny is determined to continue running Mercer Steel, much to Blake’s dismay; and Chao offers Ah Sahm some advice for his future with Young Jun.

Leary pressures gentleman industrialist Byron Mercer, who is Penny’s father, to hire his men for a cable-car track job — despite the fact that Mayor Blake hasn’t yet awarded Mercer the contract. Accused of assault and perhaps worse, Ah Sahm gets a cold shoulder from the Hop Wei, with his fate in the hands of an unexpected ally. Buckley urges Mai Ling to eschew restraint and start a war with the Hop Wei.