In the vast, rugged reaches of frontier America in the post-civil war era is Gabe Tanner. He is a young scout and Indian fighter. Along with his trusted companion Big Smoke, a large gray buffalo horse, he is fresh out of the army and looking for adventure. Gabe finds himself employed by a wagon train full of Mormons headed en-route from Omaha Nebraska to the Utah Territories. His job is to scout the way and blaze a safe route for the wagon company...