Roy Rogers, Smiley Burnette and the Sons of the Pioneers go undercover to help Texas Governor Russell Hicks stop World War II Axis sympathizers from blowing up U.S. warehouses.
Twenty years earlier Farrell killed his mining partner Andrews. Now Andrews daughter arrives to get her father's trust fund. Farrell having rustled Roy's cattle now takes her money from her Lawyer and lets her overhear false information of their next rustling job. With the posse at the wrong location, his men attack the cattle train and Roy on board find himself greatly outnumbered.
A rustler's son (Roy Rogers) courts a rancher's daughter (Mary Hart) during a range war.
Roy and Gabby return to Gabby's Texas ranch, after fighting with the Confederate military during the American Civil War, to find that a blustery Union Colonel whom they have previously hassled is now their district commander. Unbeknownst to the Colonel, however, is that the soldiers he believes have been sent to assist him are actually Union Army rejects who have come to loot the civilian populace under the guise of reinstituting normalcy to the former Confederate district.
To bring water to their valley, ranchers have raised money to build a dam. When that money is stolen, Allison suggests the ranchers sell their stock to a friend of his thereby getting the money needed to complete the dam. Roy has a clue that Allison was involved in the robbery and is out to get control of the valley. So Roy and the boys try to delay the sale of the stock while they look for proof against Allison.
A radio saleswoman helps a singing cattleman trap a shady meat buyer with a bogus broadcast.
Scanlon is pulling off a land swindle by selling lots in a ghost town claiming the power company is bringing in a line. As a bonus he throws in shares in a worthless gold mine. Gene is on to Scanlon and tries to get him to buy back the deeds by salting the mine with gold. But when a new vein is really discovered Gene has to stop the sales but is trapped in the mine by Scanlon's men.
A wrongfully-imprisoned man becomes determined to find who was responsible for the death of a local sheriff.
In his starring debut, Roy gets elected to Congress in order to bring water to the ranchers in his district. In Washington, he learns he needs the backing of a key congressman and gets that man to go west for an inspection trip. When the congressman is initially unimpressed, Roy gets the inspection party stranded without water to show the true conditions.
Melody arrives looking for the killer of his uncle and at the same time Dumont arrives looking for the murderer of her father. They both suspect Skelton and Dumont finds incriminating evidence in his office. But when Melody finds the murder weapon in Skelton's office he is arrested by Shelton's stooge Sheriff.
As the sheriff of a small western town, Autry sings his way into a relationship with Eleanor, a singer from a Chicago nightclub who earlier witnessed a murder.
After the Texas Rangers are disbanded, the the reconstruction years following the Civil War, a private state-police force extorts money from the citizens in a "protection" scheme. Ex-Rangers Jimmy Wakely and "Cannonball" Taylor foil an arrest by state-police officers Hamon and Kelly. Commissioner Jed Brant tells his nephew that his old friend Jimmy is plotting against the law-and-order forces. Vic's fiancée and ranch-owner, Sheila Carol, refuses to sign up with the crooked police outfit, and believes Jimmy is an outlaw. On Chief Barton's order, Hamon shoots ex-Rangers Murphy and Payson, so they can be blamed for a raid on Sheila's ranch.
Gene Autry and his sidekick Frog look into a phony oil scam being perpetrated on a mission orphanage.
A cowboy is wrongfully accused of murder. He winds up in Harlem, where he assumes the identity of a preacher-turned-gangster who looks like him. He infiltrates the gang to catch the men who framed him.
If a young lady gives up her inheritance the local ranchers will lose their free grazing land.
James Kincaid controls the local water supply and plans to do away with the other ranchers. Government agent Sandy Saunders arrives undercover to investigate Kincaid's land swindle scheme, and win the heart of one of his victims, Fay Denton.
When football player Tex fletcher arrives home he finds his father missing. Jim Davis has killed the father and learning of Tex's identity.
Working undercover, the Rangers are after Bull and his gang. Ted successfully joins Dr. Aikmans traveling medicine show, but Jim's identity has been exposed and he is in danger.
Jimmy Wakely wishes to sell to the government a group of wild mustangs which he has captured and trained for rancher Matt Blake. The competition is Flora Carter, the owner of a near-by ranch. The army colonel in charge decides to buy the winning horses of a cross-country race. Flora has her henchmen, led by Sam Phelps resort to foul means in order to try to win the race.
Hidden Valley has managed to retain its Old Western atmosphere, free of modern-day corruption, until escaped convict Smitty arrives with plans of taking over and opening the town up as a gambling resort. It's up to Rex Allen and his pals to put a stop to it and sing a few songs along the way.