The rival Comanche and Kiowa tribes form an alliance to attack white homesteaders. A cavalry officer(Dane Clark) persuades their leaders to talk with a government emissary, and uses the time this buys him to set about evacuating the settlers to safety in case the negotiations end in failure. He leads them to Thunder Pass - an area the natives fear - but his other troubles such as a gunrunner in his midst.
Despite some tediousness, this is a fairly enjoyable western which benefits from interesting assortment of characters such John Carradine's gunrunning character, great scenery (Bronson Canyon/Apple Valley), some tense moments and much needed action tacked at the end. It's formula stuff, but B-western devotees should find it passable.