As described in a film magazine, Ol' Santa Fe (Carey) drops off a fast freight train passing through town. He saves an urchin that had been assisting a beggar with a bear from a severe beating and adopts him as his "Pard" (Eason). Securing a job as a porter at the bank Caliente Trust Company, Santa Fe learns that bank president Rufus B. Coulter (Hale) is in league with a bad gang entrenched in the foothills, who have given Sheriff Mart Fraser (Nichols) much trouble. Coulter receives word through the K.C. Kid (Cooper) that a bank examiner is coming to Caliente, so he sends bank employee Dick Farwell (Harron) on a false errand to cover his tracks. Santa Fe goes out to rescue Dick, who has been captured by the outlaws, and runs into the sheriff lost in a sandstorm. Santa Fe proceeds to the rendezvous of the crooks, frees Dick, and returns for help. With the assistance of some U.S. troops he captures the outlaws, exposes Coulter, and then exposes his identity as The Fox, a special agent of the U.S. government sent out to round up the lawless gang. He also wins the love of the sheriff's daughter Annette (Clarke).