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.
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.
When a threat of a cull looms over a herd of wild horses, Jack and Amy go to the aid of an old friend in Pike River.
Amy and Ty find themselves drawing closer as they make a desperate bid to save the wild horses.
