Young Dan Light (Orley Lindgren), an orphan, is taken in hand by Johnny Wintergreen (Edgar Buchanan),hunter of wild horses for selling to the U. S. cavalry. Dan's grief over the death of his parents in an Indian raid is partially eased by his belief that his pet colt, Top Kick, escaped. Wintergreen takes Dan to a army post, where Major Callan (Hayden Rorke)welcomes the boy into his home. Several years later, Dan (Ben Johnson), now in love with Callan's daughter, Caroline (Martha Hyer), joins Wintergreen as a wild horse hunter. Dan is obsessed with the thought that Top Kick escaped the Indians and finds Top Kick, now a great white stallion, leading a herd of wild horses.