Durant files an injunction against Union Pacific, threatening Cullen's position; Elam deals with a dangerous newcomer.

With General Grant's deadline only two days away, a gang of riders attacks Cheyenne while Cullen and Elam pay Durant a visit.

Cullen grapples with consequences while Elam mounts a rescue attempt. Durant receives Gen. Grant and the U.P. board in Cheyenne ahead of the deadline.

An unexpected roadblock forces Cullen to make a difficult choice as a reporter arrives in Hell on Wheels. Elam struggles with his new boss.

Cullen and Elam try to secure a new lumber source following a railroad accident; Durant tells Louise a secret about Cullen.

When a cholera epidemic hits Hell on Wheels, Cullen must find fresh water before his workers die. Durant faces political fallout.

After his workers defect to the Mormons, Cullen recruits Durant to help get them back. Meanwhile, Sean and Mickey's past comes back to haunt them.

Cullen and Elam search for their stolen food on the prairie; a stranger's arrival threatens Elam's family.

After a hard winter, Cullen and Elam travel to New York to secure their positions on the railroad as Durant fights for his legacy from prison.

Cullen helps Elam track down a dangerous criminal; the town prepares to move down the tracks.