Roy Rogers, a Nevada State Ranger Captain in charge of the Rangers Reclamation Service, makes a trip to Las Vegas for the annual Heldorado Frontier Days Festival, as he wants to help his old friend Gabby Whittaker who originated the idea (at least, in this film).In Las Vegas, Roy meets heiress Carol Randall, who has been selected as the Queen of the Heldorado. Roy is informed that the F.B.I. wants an immediate investigation of the counterfeit thousand dollar bills that are being passed over the gambling tables at the casino.
| Actor | Role |
|---|---|
 Roy RogersRoy Rogers | Roy Rogers |
 George 'Gabby' HayesGabby Whittaker | Gabby Whittaker |
 Dale EvansCarol Randall | Carol Randall |
 Paul HarveyC.W. Driscoll | C.W. Driscoll |
 Brad DexterAlec Baxter (as Barry Mitchell) | Alec Baxter (as Barry Mitchell) |
 John BagniJohnny - Driscoll Henchman | Johnny - Driscoll Henchman |
 John PhillipsSheriff | Sheriff |
 Malcolm 'Bud' McTaggartBellboy Henchman (as James Taggart) | Bellboy Henchman (as James Taggart) |
 Bob NolanBob Nolan | Bob Nolan |
 TriggerTrigger - Roy's Horse | Trigger - Roy's Horse |