Trouble in Colorado is tying up Union troops needed back east during the Civil War and Lieut. Burke is sent to investigate. Macklin and his gang are causing the problems and Capt. Mason joins them. When Burke catches up with them he also finds Mason, his brother.

• Republic Pictures
• Roy Rogers
• George 'Gabby' Hayes
• Pauline Moore
• Milburn Stone
• Maude Eburne
• Arthur Loft
• Hal Taliaferro
• Vester Pegg