Likeable but deadly outlaw Jack Posey is serving a long stretch of hard labor at Yuma Prison in Arizona when his fortunes turn for the better when his older brother Dale pays him a visit. Dale is a United States Marshal and his visit isn't sociable. Dale is there to offer Jack a deal approved by the governor. Jack's old gang now led by Jack's former number two man Tom Spooner has become the most wanted outlaws in the west. Dale is authorized by the governor to offer Jack a full pardon in exchange for helping to bring Spooner and the gang to justice.