Hell has frozen over following the brutal winter of 1868 and things have not been easy for Cullen Bohannon (Anson Mount) in the most thrilling season to date.

With the harsh weather bringing construction of the railroad at a standstill disgruntled workers inciting chaos in Cheyenne. With his future hanging in the balance, Cullen must rise-up once again and regain control of Cheyenne by any means necessary before the hope for a united America turn to ashes.