Riders of the Northland: In this western, three Texas Rangers decide to do their part to save the world and join the Army, but before they can, they are sent to Alaska to destroy a secret Nazi operation involving a submarine refueling station. The outpost is located behind an impenetrable tangle of barbed wire. The rangers get a little help, and discover a traitor. Then to get through the wire, they start a cattle stampede and save the day.