Heldorado plot
"There's a treat on every trail... a thrill in every spill... in hootin'... howlin'... HELDORADO!"
Roy Rogers, the musical captain of the Nevada State Rangers, takes his famous horse Trigger to the Heldorado Frontier Days Festival in Las Vegas at the request of his old friend Gabby Whittaker. Whittaker came up with this festival. Roy also meets heiress Carol Randall, who has been chosen as the 'Queen of the Heldorado'. Roy is informed that the FBI is ordering an immediate investigation into the printers of counterfeit thousand dollar bills. These notes are said to be circulating at the Las Vegas casino.