U.S. Marshal Rocky Lane arrives to help his friend Nugget whose shipments are being robbed. Learning the gang only goes for incoming shipments, he figures they are repacking the loot and having Nugget ship it out. So he hijacks the next outgoing shipment finding a box labeled tools contains gold bars. Then posing as an outlaw he makes a deal with the gang hoping to round them up. But the boss learns he is a Marshal and he is made a prisoner.
Recently discharged cavalry sergeant Chad Santee (Buster Crabbe) joins his brother, Jubal (Neville Brand), and discovers that Jubal is a wanted outlaw. On the way he meets Rose Fargo and rescues her from the unwanted advances of a gambler, "Blackjack". When Chad and Rose arrive they find that Jubal and his partner, Shawnee, are really rustlers and outlaws. Jubal tries to get Chad to join them but he refuses, and leaves to set up his own homestead with Rose at his side. Later, the repentant Jubal comes to join him. Shawnee, angry at what he considers a double-cross, attacks the brothers with his gang.
Bringing his large cattle herd to Sundown, rancher Tex Jordan must sell his cattle to corrupt baron Jack Hatfield. He does OK but learns Hatfield is cheating the small outfits. When one refuses to sell he is murdered and Tex then decides to stay and take up the fight. He is appointed a special Agent by the Governor but unknonw to him the Governor's Secretary is a spy for Hatfield and reveals his plans.
When the ancient continent of Mu sank beneath the ocean, some of its inhabitant survived in caverns beneath the sea. Cowboy singer Gene Autry stumbles upon the civilization, now buried beneath his own Radio Ranch. The Muranians have developed technology and weaponry such as television and ray guns. Their rich supply of radium draws unscrupulous speculators from the surface. The peaceful civilization of the Muranians is corrupted by the greed from above, and it becomes Autry's task to prevent all-out war, ideally without disrupting his regular radio show.
Grant hides stolen money in the luggage of Bonnie Shea who is moving west. Later when he and his men arrive to retrieve the money, they also kidnap Bonnie. This sends Reasonin' Bates and his cowhands on their horses after the gangsters in their cars.
Lawyer Creech is after the ranch of the dying Cartwright. First he brings in Cahill to pose as the only living relative. Then when the Tonto Kid finds platinum on the ranch, Creech frames him for murder.
Tex rides to the rescue when badguys led by LaCrosse and Utah Joe kidnap Lettie.
A mysterious outlaw known as the Sidewinder, phantom leader of renegade Ute Indians, terrorizes the people of the Arizona Territory in the 1870s. When rancher Tex McCloud has his place burned out, he vows to find and kill the Sidewinder.
A deputy sets out to prove that a respected judge, who had once been a criminal, is being framed for crimes committed by a crooked saloon owner.
Horses are being rustled by outlaws known as the Hell Hounds. When the Sheriff is killed, his Deputy Yak takes over the search for the rustlers. John Lawson says Yak cannot marry his daughter until the murderer of the Sheriff is caught. But unknown to Lawson, the murderer is his own son.
Film version of a play about a Mexican bandit.
A singing cowboy turns out to be a tenderfoot.
A honest stranger arrives in Devil's Gap and helps the local sheriff expose the murderer of a rancher.
A Texan traveling across the wild West bringing the news of the world to local townspeople, agrees to help rescue a young girl who was kidnapped.
Ring Hassard and his father Jeff, wild horse breakers, live in a hidden mountain eyrie as Jeff is wanted for a murder he didn't commit. Things change when they take in a lost young lady, Riley Martin, who finds that Ring has "never seen a woman close up." Jeff is injured, Ring runs afoul of horse thieves and the law, and Riley (who is a lawyer) labors to clear the Hassards (who others would prefer dead).
Passing through a town, a farm boy aspiring to be a bounty hunter rescues a woman who has been tricked into working in its brothel and the two travel towards his father's ranch.
Kittridge is hired by the villans but turns to defend the rancher Saxon after learning the true situation. Kittrige wins Saxon's ranch with a cut of the cards but Saxon has other reasons for loosing the gamble. Telford and Lake try everything from bushwacking to setting a wildfire to stop the Saxon/Kittridge herd of cattle from reaching the railhead.
When easterner Jack Steel gets into trouble with the law again, his father sends him to his ranch out west. There he and Alice Duncan become attracted to each other. Cowhand Slim was planning to marry Alice and now kidnaps her. When Slim's girl friend learns of Slim's interest in Alice, she tells Jack where Alice is and he heads out alone to face the three kidnapers.
A drifter helps a ranch couple fend off the approaches of a ruthless landowner.
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.