Burly Johnny Mack Brown once again plays undercover U.S. Marshal Nevada McKenzie in this overly complicated series oater from low-budget Monogram. This time, McKenzie, who goes under the alias of Roy Ferris, is waylaid by would-be stage robber Cy Manning (John Merton) en route to the Bar X Ranch.

Prince the wonder horse and his gallant rider gallop off to protect hapless ranchers from the ruthless Nazi bad guys who are trying to steal their land so they can exploit the valuable tungsten deposits in this WW II western. Mayhem ensues, but soon the villains are vanquished and America's tungsten deposits are safe once more.