It's WW II and German Reuther has organized local gangs to sabotage the beef supply at the source. Marshal Lee Clark arrives to investigate and joins up with local cowboys Art Davis and Bill Boyd. Lee has a typewritten note from the gang and hopes it can be traced to it's source.

"THEIR TRIGGER FINGERS ARE ITCHING FOR TEXAS ACTION! Enemy agents haven't a chance when they try to invade the Lone Star State!"