Rock Bannon, wounded in an Indian attack, is rescued by a wagon train heading to Oregon. He has fully recovered when the train pulls into a fort to stock up on supplies. It is there that the leaders of the train meet Morton Harper, a smooth-talking man who persuades them to take an easier trail that will allow them to escape an attack by Indians. Bannon knows that there will be no escape from attack on that route and that it will lead the train directly...