Jess Derringer gets word that the woman he loved and left behind was murdered by five ruthless thugs. Jess is driven to avenge her death. His best lead to the identity of the killers is a receipts made out to a member of the Colby ranching clan. Jess and his younger brother Sam infiltrate the Colby Ranch by signing on as gun hands. They soon realize that riding the fence between crooks and good guys is more dangerous than they reckoned on, especially when it comes to a shooting showdown....