When his cattlemen abandon him for the gold fields, rancher Wil Andersen is forced to take on a collection of young boys as his cowboys in order to get his herd to market in time to avoid financial disaster. The boys learn to do a man's job under Andersen's tutelage, however, neither he nor the boys know that a gang of cattle thieves is stalking them.
Jack has been called in to investigate stage robberies where the stolen gold bullion mysteriously disappears, He finds the Professor, an elderly ex-con, and convincing him they used to work together, gets the Professor to get him in to the gang. Now posing as an outlaw, he learns what the Professor does with the bullion, but he is in trouble when his true identity is revealed.
Lambert, a young man out to make his fortune, is out west trying to sell a gadget that can peel potatoes, open cans, pull out nails and perform other handy tasks. He comes to a cattle ranch and runs into a group of cowboys eating supper. He impresses the cowboys so much that they make him their leader, and it's not long before he's hired by pretty young ranch manager Vesta Philbrook as her aide and bodyguard. "The Duke", as he's now called, falls in love with her and sets out to help her get rid of a gang of vicious cattle rustlers that are constantly raiding her ranch.
After escaping from jail, outlaw Wes McQueen is convinced by his old partner in crime to do one last heist.
A series of reversals bring two desperate people together. When a saloon owner is framed by his partner for a stagecoach robbery, he fights to secure an acquittal.
A posse discovers a trio of men they suspect of murder and cow theft and are split between handing them over to the law or lynching them on the spot.
Notorious shootist and womanizer Quirt Evans' horse collapses as he passes a Quaker family's home. Quirt has been wounded, and the kindly family takes him in to nurse him back to health against the advice of others. The handsome Evans quickly attracts the affections of their beautiful daughter, Penelope. He develops an affection for the family and their faith, but his troubled past follows him.
A band of murderous cowboys has imposed a reign of terror on the town of Warlock. With the sheriff humiliatingly run out of town, the residents hire the services of Clay Blaisedell as de facto town marshal. He arrives along with his friend, Tom Morgan, and sets about restoring law and order on his own terms whilst also overseeing the establishment of a gambling house and saloon.
A peace-loving man named Ben Kane takes a job as deputy marshal of Lords, in the old West. Kane is no lawman, but he accepts the badge because he has an old score to settle with the town's chief trouble-maker. Once on the job, Kane must also deal with a young sharpshooter named Billy Young and a sharp and sassy saloon dancer, Lily.
A gunfighter, stranded in the desert, comes across the aftermath of a stage robbery, in which all the passengers were killed. He takes one of the horses to ride to town to report the massacre, but finds himself accused of it. He also finds himself accused of the murder of the local banker, and winds up hiding in the basement of a house where the local sheriff, who is very sick, lives with his daughter.
When Matt Kilgore and his men frame and then hang an innocent man, Lige Saunders sends for his son Wild Bill Saunders who arrives to find his father shot by Matt's brother. When the brother is killed in his fight with Bill, Matt sends two fake Deputies to arrest Bill whom he then plans to hang. But Matt's sister, attracted to Bill, overhears the plan and rides for help.
After a stagecoach holdup, Frank Slayton's notorious gang leave Ben Warren for dead and head off with his fiancée. Warren follows, and although none of the townspeople he comes across are prepared to help, he recruits two others who have sworn revenge on the ruthless Slayton.
Author Robert Louis Stevenson takes a trip to Napa Valley, California, in 1880 and gets involved in the exploits of a stagecoach driver who captures a hooded highwayman called The Monk. Supposedly inspired by a true incident, this offbeat Western based on Stevenson's The Silverado Squatters is a dandy, high-spirited adventure yarn.
Jim Lockhart is out to capture the robbing and murdering "Solitaire Kid".
Bolton has organized a feud between the Rork's and the O'Neil's. He has rustled cattle and killed a man putting the blame on Danny O'Neil. Tom Rork has found a bullet with markings on it that he hopes will clear Danny and bring in the real killer.
Deputy Sheriff John Steele recruits bandit Sonora Joe to help him find out who's been bumping off all the local lawmen and rustling the cattle.
The local school is causing Hoppy problems. First Bar 20 cattle are stolen when Hoppy investigates a problem there. Then the new teacher arrives and disrupts the routine of the Bar 20 hands. Later with the Bar 20 hands at graduation, the rustlers are poised to strike again. But there is dissension among them and this will lead to the break that Hoppy needs.
Escaped criminal "The Fox" hates Hoppy and a Rurales colonel for imprisoning him and lures Cassidy to Mexico in order to exact his vengeance.
Caldwell and Nixon have their men rob the stage and then critcize the Sheriff for not catching the robbers. With her father the Sheriff under pressure, Mary sends for Hoppy who finds the stolen money and sets a trap to bring in the entire gang.
Hoppy and Lucky are headed to South America to deliver a heard of cattle. Bay guy Ralph Merritt gets in their way. For a while.