No one knows their way around a faro table, bank vault, or six shooter more than Smilin' Doc Ford. When he's not gambling or theiving, he's throwing lead - or, if he's feeling especially vicious, slitting throats with his Arkansas toothpick. Roaming the west with Doc is a band of wild outlaws including a pair of hate-filled ex-cons and the voluptuous Zenobia "Zee" swallows, Doc's kill-crazy lady. The gang have been on a killing spree, leaving a trail of bodies near Ty Brannigan's Powderhorn spread in Wyoming's Bear Paw Mountains. U.S. marshals want Ty to help them track down Smilin' Doc's bunch. But when the hunt puts the Brannigan clan in the outlaws' sights, Ty and his kin take justice into their own hands - and deliver it with a furious, final vengeance.