Apache tracker Calian helps Bostonian Abby Walker find Independence, Texas, where she meets slippery Hoyt Rawlins and suspicious Sheriff Tom Davidson. Abby and Hoyt must align to uncover her husband's killer and save the frontier boomtown.

Hoyt, Calian and Abby try to uncover her husband's killer; the sheriff and loyal deputy Augustus hunt for the "mysterious" bank robber; Kate badgers Hagan into doing what's right; Lucia discovers a new friend and a startling talent in Kai.

Abby has a chance to undermine the Sheriff; Hoyt and Calian ally to defeat bandits, but Calian may risk his standing in his tribe; Kate chases information on Abby; Kai's again invaluable; Gus wrestles with trauma tied to wearing the badge.

Tom is torn between helping an old friend and keeping up appearances as the sheriff; Abby and Kate's friendship is tested as Abby faces questions about her dead husband; Gus and Calian reconnect and pursue a new lead in Liam's murder.

Abby digs into Liam's past; Gus and Calian quiz an old mentor and Calian is accused of an evil crime; Tom ignores Kate and arranges a Fight Night to impress a railroad executive; Hoyt aids Lucia's family; Kai reveals he can throw a punch.

Abby has complicated feelings for Tom and defends a case with life-or-death consequences; Calian tackles painful memories; Gus weighs a friendship against his badge; Hoyt and Lucia face an immense loss; Kate finds unexpected corruption.

When an estranged family member arrives in town, Abby finds her secret identity in jeopardy; Hoyt reconnects with his outlaw roots; Kai contemplates his future; Calian receives a dire warning that may drive him back to Independence.

Abby starts to question everything she thought to be true, much to the dismay of her friends. Kai thinks he's seen a ghost when an unexpected person from his past appears in Independence, which makes Kate suspicious.

As a dust storm descends upon Independence, Abby and Tom find themselves desperate for shelter. Gus has a lead that can potentially help Calian. Kate, Hoyt and Lucia work together, but things do not go according to plan.

Abby proposes a scheme to reroute the railroad away from Calian's tribal land; Tom finds the tables turned while trying to take down his brother; Kate and Kai navigate their fractured friendship; Gus is adamant that Tom is up to no good.

A series of letters that Gus writes to his late wife reveals the origin stories of Abby, Hoyt, Kate, Kai, Calian, and Tom, along with the role they all played in each other's destiny.

While Gus clings to life, Abby, Hoyt, Kate, and Calian must stop at nothing to expose Tom's true nature and end the Davidson reign over Independence once and for all.