A former confederate soldier journeys to the transcontinental railroad to seek vengeance.

Lily encounters natives in the wilderness. Cullen is questioned in regards to his recent actions against others. Meanwhile, Durant continues his push for political gain through his persuasions.

When Lily goes missing, Durant organizes a search party. A subsidiary request prevents Cullen from his continued search for the sergeant involved in the murder of his wife.

Cullen's search for the sergeant nears its end; Durant keeps to his hidden agenda while assisting in Lily's recuperation.

Durant challenges the Cheyenne to a competition in an effort to bring a halt to ongoing negotiations. Meanwhile, Elam and Cullen try to prevent bloodshed in town.

With Elam's life in the balance, Cullen must decide how much he’s willing to risk. Meanwhile Durant faces financial ruin as Lily confronts the family of her late husband.

Durant dispatches Cullen and Elam on a mission of vengeance. Lily struggles to find her place.

A looming railroad deadline throws Cullen and Lily together; Joseph and Elam deal with what their violent mission has wrought.

In the Season 1 finale, Cullen's past and future collide, impacting his life on the railroad.