Secret Service agent Jim Carter is working undercover with Captain Horton to bust a pair of gun runners. Rango and Pink Cloud suspect Carter is the gun runner and that the captain is in cahoots with him.
Rango and Pink Cloud are in Junction City when a beautiful blonde reports her priceless diamond necklace stolen. With the sheriff out of town, Rango and Pink Cloud step in to solve the case. Hijinks and hilarity ensue.