Sierra Belt, a sharpshooting seventeen-year-old rancher's daughter is weaned on a series of dangerous encounters with rogue animals. She grows up hunting and working with her father as a hunter for hire on Colorado's Western Slope of the 1860's. The experience serves her as she later faces treacherous men. The maturing girl chances on a young half-breed at the rendezvous and experiences attraction if not love for the first time. The romance ends as quickly as it started owing to dislocation. A year later, on a trip east with her friend, she experiences a near fatal attraction to a promiscuous young man.
Events spin out of control and the girl takes matters into her own hands. The consequence of her actions propels her into a prolonged chase across the country and through the mountains. At the same time, her half-breed friend experiences tribulations of his own and is hunted by a ruthless Mormon assassin.
Fate and fortune intervene in a beneficial manner to spare the young people. A reunion occurs, but the circumstances are bitter sweet.