Abby finds her secret identity in jeopardy when an estranged family member arrives in town and demands Tom's help finding Liam Collins' missing wife. A restless Hoyt reconnects with his outlaw roots, Kai contemplates his future as his past begins to catch up with him, and Calian receives a dire warning from a mysterious woman 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. Gus, Hoyt and Kate work together to help Kai, resulting in Gus making a move no one saw coming.

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

Through a series of letters Gus writes to his late wife, the origin stories of Abby, Hoyt, Kate, Kai, Calian, and Tom are revealed along with the role each played in each other's destiny.

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