In 1858 four hard men ride across the border into the New Mexico Territory. Their target is a
large ranch where they hope to get rich. After the raid they ride off with a box of ancient
coins leaving the rancher's family dead and the ranch burnt down. Before he dies the rancher
sends a letter to his friend Abraham Lincoln. During the Civil War some of the stolen coins
turn up in the western Territories. President Lincoln nominates former Cavalry Caption Joseph
'Joe' Pernell as U.S. Marshal and requests him to follow the trail of coins and get justice for
his dead friend. From Fort Union in New Mexico the Marshal starts his search which ultimately
brings him to the Montana Territory where he was born and raised. During the journey Joseph
Pernell has to use his wits and military experience more than once to solve the mystery of the
stolen coins and to bring the raiders to justice.