While the Civil War still raged on in the southern parts of the United States, a series of stagecoach robberies had taken place between the cities of Alder Gulch, Virginia City and Bannack in Montana. After Vigilantes has put an end to it and the robbers as well as their ring leader were hanged, the violence was considered to be over. However, soon after that, another series of stagecoach holdups has started. Federal Marshal Joseph Pernell is called from his winter quarters in Prescott, Arizona to Fort Laramie. President Abraham Lincoln and the U.S. Cavalry ordered him to stop the stagecoach raids and to bring the robbers to justice. In early spring of 1865, Joseph “Joe” Pernell travels through Montana searching for the bandits while further holdups are taking place. The gang of robbers seem to become more violent as they have started killing witnesses. There must also be an outside informant to let the road agents know where to hit next. With the help of the Sheriff of Missoula and 1st Lieutenant of the U.S. Cavalry, Marshal Joseph Pernell takes on the gang of road agents.