Fed up with her grandson Carter's unwillingness to track down the thieves, Cecilia appeals to her old beau, Ben Caldwalder, of the Texas Rangers, for help.

To infiltrate the rustlers, Ranger Jim Kingston poses as an outlaw known as the Pecos Kid, and is hired by Joe Yuma, who owns the packing company.

That night, Yuma and his men slaughter more cattle on the ranch, and after dismantling their operation, take a convoy of trucks to the Portos Packing Company.

As Ellen, Jim, Ben, and Cecilia return the rustlers' fire, the Dangerfields' Mexican servant, Mio Pio, risks his life to get more ammunition.

After the Rangers arrive to apprehend the rustlers, Jim and Ellen plan to wed and Ben orders Cecilia to marry him.