The year is 1865 and after his wife ishuged, Cullen Bohannon, a former Confederate solider decides to enact revenge on a group of corrupted Union officials. However, to do so, he will have to work and travel with the construction unit of the transcontinental railroad.

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 cuddle of his wife.

Cullen gets a lead on the location of his target. Durant offers medical help to Lily Bell, but his real motives quickly become clear.

Cullen and Elam disagree after Durant\'s new suggestion for solving the railroad\'s financial problems is overheard. A traveling circus offers the railroad workers some reprieve.

When Durant abruptly stops negotiating with the Cheyenne natives, Cullen and Elam will have to work together in order to save the lives of many in town.

Durant braces for financial ruin after hearing from the government officials. Cullen weighs the options of continuing on his destructive path. Lily meets with the family of her late husband, Robert Bell.

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 unhappy mission has wrought.

Cullen's past and future collide, impacting his life on the railroad.