British Army officer John Carshalton is serving in Canada when he gets into a battle with a Frenchman over the affections of a girl. The dispute ends with Carshalton killing his love rival in an illegal duel and he must flee south of the border to escape court martial.
He finds himself in a small Kansas town near Abilene. There he stands with an ageing deputy sheriff against a group of outlaws and this earns him the respect and friendship of the town.
But the murdered Frenchman’s brother is after him, intent on forcing John into one more duel. When this man teams up with the outlaws Carshalton originally faced, he finds his strong sense of humour and duty put to the test: he must face the danger he has unwittingly brought to his adopted town.