While crossing the desert, a frontier scout, Jess Remsberg, rescues Ellen Grange from a pursuing band of Apaches, and returns her to her husband, Willard Grange. He is contracted to act as a scout for an Army cavalry unit. Willard, Ellen, and her infant son are along for the ride, as is horse trader Toller, a veteran of the 10th Cavalry. The party is trapped in a canyon by Chata, an Apache chief and grandfather of Ellen's baby. Willard is captured and tortured. Jess sneaks away and brings
