A cavalry major informs Matt that a band of Pawnee have gotten guns and are now ravaging the countryside. The major says the guns must have come from Dodge, specifically Jonas' hardware store. Matt disagrees, and sets out with an Indian scout to find the band and whoever is smuggling guns to them.
Pretty good episode. Most of the action is away from Dodge in the countryside. Sticklers can point out the very un-Kansas mountains the men travel through, but what the heck. Note the nicely staged burned-out scene on the prairie that lends a realistic touch to the rampage,(certain similarities here to that fine 1972 cavalry western, Ulzana's Raid). This 30- minutes is nothing special, just solid Gunsmoke entertainment.