 Dusting off the story he sold Spectrum Pictures in 1937 for "Melody of the Plains" (with Fred Scott and Dave Sharpe in the roles played here by George O Brien and Kirby Grant) writer Bennett R. Cohen maintains his lead over Robert Emmett Tansey as B-Western King of the Recyclers while barely bothering to change the character names. Rancher Steve Condon (George O Brien), in a fight with rustlers is led to believe he has killed one of his own cowhands, Bud Mathews (Kirby Grant as Robert Stanton). Actually it was a bullet from the rustler leader, Cass Clantine (Harry Woods), that brought Mathews down. Repentant, Steve, with his pal, Pop Norton (Slim Whitaker), leaves for Encintas, where Bud s family lives. Arriving there, he learns that cowhands don t stay long at the Mathews Ranch, the Cicrle M. Steve and Pop meet John Mathews (Howard Hickman) and his daughter Molly (Virginia Vale) and are hired as punchers. Steve decides to postpone his disclosure that he killed Bud. Cass and Scar Atwood (William Haade) arrive in town and join forces with rancher Sam Gorman (Walter Miller) who is secretly trying to gain control of the Circle M. Gorman sends them out to get jobs on the ranch, and they recognize Steve although he hadn t seen them in the earlier gunfight. Steve finds that a rustled herd of cattle has been driven across the Mathews property, which is right on the border, into Mexico. He suspects that Gorman is the man behind the mystery, Returning to the ranch, he finds Cass and Scar annoying Molly and, in the ensuing fight, Scar denounces Steve as the man who killed Molly s brother. Before Steve can explain, Mathews orders him off the ranch. Later, Cass and Scar quarrel and Cass shoots Scar. Steve makes Scar think he is dying and Scar confesses erevything to Steve, Pop and Sheriff Ware (Bob Burns). Meanwhile, Gorman and his gang head for the Mathews ranch to force the old man to sign over his property.