Buck Colins heads a group of local ranchers who are trying to prevent the railroad from completing its line through their property. Till now they have been able to charge tolls on herds passing through. Hoppy goes undercover to expose them.
El Puma, a Mexican desert guide, escorts an archaeological expedition headed by Professor Lucius Lloyd through the Indian badlands of Mexico. Marian, the professor's niece accompanies the party as only she can translate the Aztec writings in the diary of her father, murdered on a similar expedition six years previous. The professor is murdered by a knife, and the weapon is recognized as the property of El Puma. Magpie, a Federal Investigator, knows that El Puma is really "Lightnin' Bill' Carson, a former federal agent who has been missing since Marian's father was slain. The reluctant Magpie believes that his old pal is guilty. Carson sets out to prove otherwise.
Before he was killed, Martin hid a half million dollars worth of bonds on his ranch. Brainard, who killed him, Inspector Carson posing as Sam Brown, and Martin's niece Margaret all want the ranch, and it's being sold at auction.
Hoppy goes to town to help Marshal Windy with some rustlers and winds up helping the widow Joyce when confidence men try to take her herd. King's Men songs include: "Hi Thar Stranger" and "Lazy Rolls the Rio Grande."
Americans come west to California in the hope of peaceful settlement. Roy and Gabby sing a duet: "We're Not Coming Out Tonight." Other songs include "Sundown on the Rangeland" and "Ride on Vaquero."
Tex arrives on the Parker ranch on Christman eve and is given the job of being Santa Claus. Also dressed as Santa Claus, Blackie robs Parker and kills a man. When Tex is arrested for the murder, he escapes and joins up with outlaw Becker and his gang. He finds Blackie's Santa Claus suit but is soon made a prisoner.
Two young brothers are separated when their wagon train is attacked and their parents killed. One brother Cherokee is raised by Indians and the other, the Kansas Kid, by the outlaw gang leader Buff. Twenty years later they unknowingly meet again when the Kid goes after wagons being guided by Cherokee.
Roy Rogers is a cowboy who joins the Border Patrol, only to have his buddy Tommy get killed at a local saloon. Determined to get revenge at any cost, Roy and Rusty cross the border in search of Arizona Jack, the man responsible for Tommy's death.
A group of people traveling on a stagecoach find their journey complicated by the threat of Geronimo, and learn something about each other in the process.
When shifty cattlemen Belknap (Walter Miller) and H.R. Shelby (Gordon Hart) are caught shipping infected animals to Mexico, they frame inspector Gene Autry. Now Autry and his sidekick, Frog Millhouse (Smiley Burnette), must catch the bad guys in the act and set things straight. June Storey co-stars as rancher Martha Wheeler. Autry sings "I'm Gonna Round Up My Blues," "Moonlight on the Ranch House" and "Big Bull Frog."
Sandy Doyle, gambler and political chief of a small border town, seeks to gain control of the Bar-X Ranch, owned by Rufe Rickson, to further some undercover activities of his own. He counts on Rickson's inability to stay away from gambling as the means to his ultimate success. Government investigator Oliver Shea and his assistant, Dan Haggerty, start a fight in Doyle's place when they see Rickson being cheated and are invited to the Bar-X where Oliver and Helen Rickson, Rufe's daughter, discover interest in each other and Dan finds himself pursued by Bell, the ranch cook. Sheriff Larson brings the prize money for the $5,000 race of the Rodeo Association, and that night it is stolen.
Kent wants the Allen ranch. So he has Steve and his men rustle their cattle using Pete as an informant. When the Trigger Pals Lucky, Stormy, and Fuzzy fight back, Kent frames Stormy for the rustling.
When it appears that Fred Jamison is a member of Red's gang, he is kicked out of the Rangers. But it's just a plot between Fred and the Ranger Captain. Fred then gets into Red's gang and makes plans that will enable the Rangers to bring them all in. But his message to the Captain is intercepted and the hoax revealed.
Using a conventional Western story with an all dwarf cast, the filmmakers were able to showcase gags such as cowboys entering the local saloon by walking under the swinging doors, and pint-sized cowboys galloping around on Shetland ponies while roping calves.
Chasing jewel thieves, Captain Carson and Magpie head for the border where Carson, posing as a Chinaman, opens a store that buys jewelry. To flush the thieves into the open, Carson wins all their money at poker. They agree to sell him the jewels but plan to kill him and keep both the jewels and the money.
After Pat Garrett kills Billy the Kid, Billy's look-alike Roy Rogers arrives and is mistaken for him. Although a murderer, Billy was on the side of the homesteaders against the large ranchers. As Billy's death is unknown, Roy gets Garrett to let him pose as Billy to continue the fight, but without the killing.