Cullen awaits the birth of his baby; Durant must deal with the fallout following a railroad accident.
As Cullen plans an exit from Fort Smith, he challenges The Swede; when a new adversary arrives, Cheyenne feels his presence.
Cullen returns to work on the railroad, and clashes with his new boss; Durant and Campbell battle over valuable real estate.
Cullen is in trouble at home after he takes railroad matters into his own hands. A move against Durant and Mickey is made by Campbell.
Following the arrival of a stranger, Cullen's family is at risk. The Swede face to the consequences.
Having been attacked by a bear, Elam finds it hard to survive in a Comanche village and make his way back to Cheyenne.
Cullen attempts to reconnect with Elam. Durant takes matters into his own hands.
Cullan makes a decision to protect his family. Campbell hires a new federal marshall.
After the death of Elam, the world feels darker for Cullen. Cullen has to decide between the railroad and family.
Cullen, Durant and Campbell negotiate toward a settlement for policing the streets as an act of terror happens.
Cullen and Durant try and save the life of a criminal. Louise supports Ruth who suffers a loss.
Cullen attempts to deal with Ruth's unexpected decision. Louise puts her reputation on the line to fight for a story she believes in.
The railroad prepares to leave Cheyenne behind. Cullen returns to get his family.