Indian raiders massacred the wagon train in which seven-year-old Hardy Collins and three-year-old Betty Sue Powell were a part. Everyone else was killed. Only Hardy and Betty Sue survived. After the massacre, they were left with only a horse and a knife with which to face the long battle against the wilderness, stranded on the limitless prairie. They were up against starvation, marauding Indians, savage outlaws, and wild animals. They were mighty stubborn, but the odds were against them — and their luck was about to run out.