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.
In Old California, a young Frenchman transporting a chest full of silver travels by stagecoach to San Marino, to complete a complex business deal. The stagecoach is ambushed by a band of men whose leader, a mysterious bandido known as Cisco (Gilbert Roland), claims the silver is money that was extorted over a period of years from the poor people of California. The bandits take the money and escape, but Cisco stays behind with the Frenchman -- who, it turns out, is actually a lovely mademoiselle, Jeanne DuBois (Ramsay Ames). She follows him to the bandit's lair, where Cisco tells her he intends to return the stolen money to the poor people. The two rivals are irresistibly drawn to each other, however, and as a token of love Cisco offers to return the money to Jeanne instead. Now she must decide whether to complete her business deal, or to comply with Cisco's wishes and redistribute the wealth.
Three brothers stop off for a night in the town of Tombstone. The next morning they find one of their brothers dead and their cattle stolen. They decide to take revenge on the culprits.
To get the Delaney ranch Cole's henchman Anders has started a phony range war between the cattlemen and sheepmen. After killing Delaney, he tries to kill his daughter Jill and then Roy who was sent to investigate the war. But the failed attempts gives Roy the information he needs.
Rodeo star Roy Rogers returns home to find that his old friend Tom Craig has been murdered after he was accused of stealing a family crest from Helen Williams. Helen joins up with Roy and Gabby Whittaker to find the killers and the crest.
Eddie Dean's assignment is to thwart the efforts of a crooked gambler, Brad Barton, to take over the property of his half-brother Bill Ryan. In order to secure the ranch, which is believed to hold large silver deposits, the scheming relative contracts to have Ryan killed. He then presents a forged will to the court naming himself as the sole heir. Shocked by the tide of events, Ryan's two rightful heirs, his grown daughter Robin and young son "Freckles" are determined to remain on their father's property. Eddie and his sidekick, Soapy Jones, arrive on the scene in time to enter the fight on the side of Robin and "Freckles."
Gabby doesn't want to breed his horse the Golden Sovereign with Roy's. When Sovereign and Roy's horse escape, the Sovereign gets shot accidentally by Skoville but Roy is blamed and jailed. A year later Roy returns with Trigger, the son of the Sovereign. When Skoville reveals he was present when the horse was shot, Roy sees an opportunity to clear his name.
A young outlaw gets involved with a gang of crooks. When he tells them he is breaking away, they threaten to pin a false murder charge on him. But he is rescued and reformed by his sister, and an undercover agent for the express company.
The Cisco Kid (Gilbert Roland) hears of a land-swindling scheme devised by the police Commandante (Martin Garralaga) and the tax collector (Harry Woods) in a small western town. Cisco's efforts against the plot cause the thieves to fall out, and Cisco is able to return the land to the rightful owners.
Roy visits his home town while on a personal appearance tour. While there he enters a pony express race. To keep him from winning, bad guys try to sabatoge Roy's entry. They fail, or course. Songs include the title song and "Smile for me, Senorita."
After some gun play with a posse, the James Gang head for Quinto in a section of land which is not a part of America. Anyone there is beyond the law so the town is populated with outlaws. Next to arrive is Sheriff Rowley, following his brother whom the Gang have brought in injured. Rowley has no authority and gets on well enough with the James boys but is soon involved in other local goings-on, including a move to vote for annexation with Oklahoma which would allow the law well and truly in.
The Cisco Kid (Gilbert Roland) sets out on a double mission of rescuing a girl from forsaking her true love by marrying a supposedly wealthy suitor to save the old family hacienda, and he is also after the outlaws that robbed a stage carrying gold for the Mission. His task is made easier once he learns that the "wealthy" suitor (Tristram Coffin) is also the man behind the gold robbers.
Roy Rogers rides to the rescue when a bank robber's orphaned son (Tommy Cook), who is living at a ranch for homeless boys run by Gabby Whittaker (George "Gabby" Hayes), attracts the attention his father's rowdy gang, who want to claim the boy's inheritance for themselves
On a train trip out west to become a mail-order bride, Susan Bradley meets a cheery crew of young women traveling out to open a "Harvey House" restaurant at a remote whistle-stop.
Rancher Clay Hardin arrives in San Antonio to search for and capture Roy Stuart, notorious leader of a gang of cattle rustlers. The vicious outlaw is indeed in the Texan town, intent on winning the affections of a beautiful chanteuse named Jeanne Starr. When the lovely lady meets and falls in love with the charismatic Hardin, the stakes for both men become higher.
In 1871, professional gambler John Devlin elopes with Sandra "Sandy" Poli, daughter of Marko Poli, an immigrant who has risen to railroad tycoon. Sandy, knowing that the railroad is to be extended into Dakota, plans to use their $20,000 nest egg to buy land options to sell to the railroad at a profit. On the stage trip to Ft. Abercrombie, their fellow passengers are Jim Bender and Bigtree Collins, who practically own the town of Fargo and Devlin is aware that they are prepared to protect the little empire... trying to drive out the farmers by burning their property, destroying their wheat, and blaming the devastation on the Indians. Continuing their journey north on the river aboard the "River Bird', Sandy and John meet Captain Bounce, an irascible old seafarer. Two of Bendender's henchmen, Slagin and Carp, board the boat and relieve John of his $20,000 at gunpoint. Captain Bounce, chasing the robber's dinghy..