Outlaw Johnny Finger, better known as The Rumpo Kid (Sid James), rides into the frontier town of Dodge City, and immediately guns down three complete strangers, orders alcohol at the saloon—horrifying Judge Burke (Kenneth Williams), the Teetotalism Mayor of Stodge City—and kills the town's sheriff, Wyatt Earp (Jon Pertwee). Rumpo then takes over the saloon, courting its former owner, the sharp-shooting Belle (Joan Sims), and turns the town into a base for thieves and cattle-rustlers.