 Robert Emmett Tansey never wrote a plot he didn t get at least five versions out of over a period of 15 years or so, and this one is no exception with "Arizona Days" and "Harmony Trail" among the remakes. Government agent John Wyatt (John Wayne) is searching for a counterfeit ring operating on the Mexican/Arizona border and joins Doc Carter s (Earle Hodgins) traveling medicine show as a sharpshooter. Since Carter was recently released from prison, Wyatt is keeping one eye on him and both eyes on his daughter Linda (Marion Burns) who performs as "Natasha" in John s shooting act. But Doc is searching for the former partner who framed him with the counterfeiting charges that unjustly sent him to prison. That man was Curly Joe Gale (Yakima Canutt) just up the road a piece in Los Piedros. Gale frames Wyatt and while he is escaping from the sheriff, Gale abducts Doc and Linda. Wyatt eludes the posse and crosses the border to get extradition rights from the Mexican Rurales Captain (Gino Corrado.) The Captain has had his own man, Miguel (Joe Dominguez), watching Gale and he promises Wyatt his government s support.Wyatt is mistakenly arrested by Mexican law officers while Gale heads for the Old Paradise Mine where he has the Carters prisoners. Will Wyatt get free again and arrive in time to save the Carters?