Jim West is a guns-a-blazing former Civil War hero. Artemus Gordon is an inventive U.S. Marshal who excels in disguise. When the United States is threatened by psychotic Confederate Arliss Loveless, President Ulysses S Grant teams the duo up to bring him to justice. On a hazard-packed train journey from Washington, D.C. to Utah, West and Gordon must combine their skills to best Loveless and his diabolical machines.