The Desert's Crucible.

Jack Hardy, Sr. sends his son, Jack Hardy Jr., to the American West to "make a man of him" and instill a sense of responsibility. While West, Jack falls in love with Miss Benson, a ranch secretary. To prove his bravery to her after being taunted, Jack successfully breaks a notoriously unmanageable horse. The local villain, Tex Fuller, and his gang target Jack. In a tragic turn, Jack’s half-breed brother, Deerfoot, is killed by a missile intended for Jack. Jack eventually confronts the gang, bringing them to justice and vindicating himself in the eyes of his father and Miss Benson.