 During World War I a great friendship develops between Buck Healy (Buck Jones) and Ramon Del Ray (Donald Reed). Buck rescues Ramon during a heavy barrage and gets him safely to a hospital. Ramon dies and, after the armistice is signed, Buck returns to his hometown of Gunsight, Arizona. Learning that his younger brother Tom (Tommy Carr, long before he became "Superman" director Thomas Carr) has fallen in with an outlaw gang led by Murdock (Harry Woods), he sets out to find him. He is caught and imprisoned by the gang, and Murdock takes a letter from Francisco Del Ray (Hector Sarno), Ramon s father, inviting Buck to visit their ranchero.Knowing the Del Rays have never met Buck, Murdock impersonates Buck, robs the ranch and has plans to kidnap Del Ray s pretty daughter Juanita (Carmelita Geraghty.) Buck has a conflicting plan when he and his horse Silver arrive and take over.