Opposing his commanding officer's decision to attack a group of innocent Indians and wipe them out, Lt. Frank Hewitt leaves his post and heads home to Texas. He knows that the attack will send all of the tribes on the warpath and he wants to forewarn everyone. He gets a chilly reception back home however. With most of the men away having enlisted in the Confederate army Frank, a Union officer, is seen by the local women as a traitor. He convinces them of the danger that lies ahead and trains them to repel the attack that will eventually come.

Rod Cameron stars as frontier scout Tim Clay, assigned to guide a wagon train through Indian territory. Clay knows that he's in for a lot of trouble because of the treaty-violating activities of white criminals Pickett and Keane. Fortunately for the hero, Pickett and Keane double-cross each other somewhere along the line, weakening their ability to foment an all-out Indian attack.

When an Indian chief is murdered in a hateful town, a sympathizing ex marshal tries to stop the Indians from attacking for revenge.