Just before the Civil War (but after the South has seceded),Southern saboteurs try to prevent railroad construction from crossing Kansas to the frontier; army captain Nelson is sent out to oppose them. As the tracks push westward, Nelson must contend with increasingly violent sabotage, while trying to romance the foreman's pretty daughter Barbara.

• Walter Wanger Productions
• Allied Artists Pictures
• Sterling Hayden
• Eve Miller
• Barton MacLane
• Harry Shannon
• Tom Fadden
• Reed Hadley
• Douglas Fowley
• Robert Keys