Old Wyatt Earp grumpily receives in a San Francisco luxury hotel suite petty Kansas newspaper reporter Conrad, who inquires about the reason for the special edition Colt he and some fellow lawmen received from the manufacturer. He gets the story of the accidental shooting of actress Dora at Dodge City, who slept in the house of the targeted mayor. Marshall Wyatt Earp and sheriff Bat Masterson braved the unwilling judge's ultimatum to set chase to murderer James 'Spike' Kenedy, like his kid brother Sam nearly untouchable son of rich, powerful rancher Mifflin Kenedy. They build a, elite posse, including Indian-raised scout Bill Tilghman, while Spike murders even a devout rancher who offered generous hospitality and builds his own trigger happy gang. Sam is caught as bait and virtually tortured by dentist Doc Holliday. A bloody shootout is inevitable.