Singing cowboy Monte Hale plays "himself" in the Republic western Last Frontier Uprising. Actually, he's not really himself, but a federal agent, dispatched to Texas to buy horses on behalf of the government. Hale runs up against a vicious gang of horse thieves, including such veteran western hard cases as Roy Barcroft and Philip van Zandt. The romantic interest is in the dainty hands of Adrian Booth, who used to go by the name of Lorna Gray. Put together with the standard Republic efficiency, The Last Frontier Uprising benefits from the breathless direction of Lesley Selander.