Retired wealthy sea captain Jim McKay arrives in the Old West, where he becomes embroiled in a feud between his future father-in-law, Major Terrill, and the rough and lawless Hannasseys over a valuable patch of land.
Bill Drake is a cowpoke who must prove himself innocent of robbing the general store. The real culprit, as our hero detects, is Tom Evans, the weakling son of a local rancher.
A western settlement of pioneer descendants is threatened with the loss of its water supply through the encroachments of nearby townspeople.
Tom Kenyon and his sidekick Pierre La Farge are hired by rancher Mike O'Day who, with his daughters Toni and Sugar, provides wild horses for the government remount station.
Following a killing and robbery in a big city back east, gang leader Kedge Darvas and some of his henchies take a train to a small western town in Idaho, with intentions of hiding out there until things cool down back in Chi or NYC, or wherever they lammed from.They are welcomed with open arms by the citizens under the impression they are there as capital investors with money to spend. Before long, Darvas figures the town is ripe for the taking and sends word for reinforcements, and each arriving train unloads a few suits and snappy-brim hats.Then they get rough, kill Sheriff Posey Meed and rile up the citizens, led by cowhand Brad Farley, who had Darvas spotted for a wrong number just by the way he made moves on Sue Vancey.
Two families feud over possession of a valuable waterhole.
Down-and-out cowhand Jim Garry is asked by his old friend Tate Riling to help mediate a cattle dispute. When Garry arrives, however, it soon becomes clear that Riling has not been entirely forthright. Garry uncovers Riling's plot to dupe local rancher John Lufton out of a fortune. When Lufton's firecracker of a daughter, Amy, gets involved, Garry must choose between his old loyalties and what he knows to be right.
A ranch owner turns his place into a home for boys who have lost their fathers in World War II. His evil female lawyer covets the ranch and uses a gang of local toughs, a pack of killer dogs, and a phoney rancher's beneficiary to get it. U.S. Marshal Rogers opens an investigation when the rancher is killed.
A wanted-fugitive, called "Nevada," is wounded by a pursuing posse of lawmen, and is left to die on the desert by his companion, Bill Hall. He is rescued by a young rancher, Ben Ide, who is in love with Ina Blaine, daughter of a neighboring rancher. While "Nevada" is recovering, he and Ina fall in love but, through his loyalty to Ben, he sends her away. Going home, Ina falls into the clutches of Bill Hall, now heading a gang of rustlers, but the real leader is Les Setter who is posing as an honest rancher, and he has designs on Ina himself.
Stephen Westcott and Ed Martin scheme to put Jane Travers' wagon line out of business. They want to use it take over all the wagon- train traffic going west. Hoppy, California and Lucky must make sure that doesn't happen.
Before he was killed by Mark Foster's men, Bud Lawton willed part ownership in his ranch to Hoppy and his two pals. When the three arrive they find a fake posing as Lawton. When they expose the imposter, Foster gets the Sheriff to jail them for Lawton's murder.
Robert Kane, owner of the Bar-L Ranch, has received word from his attorney that he will have to marry Ann Scott before the 15th of the month, whom he has never met, or else lose the title to the Vista Water Company, which Ann has inherited under the condition that she be married. There is dirty-work afoot, instigated by a lawyer.
When Ranger Hoppy's falsely accused young ranger friend is killed while supposedly trying to escape from jail, Hoppy is blamed and drummed out of the Texas Rangers.
A banker is trying to cheat people out of their silver-rich land. Hoppy learns that the banker is in league with an outlaw gang.
At the reading of his late cousin's will, California learns the estate will be divied among whoever remains of the seven relatives. With one already dead, another immediately murdered, and the Lawyer telling them the ranch is almost worthless, Hoppy investigates.
Belle Langtry runs a town being taken over by cattle rustlers. She is also a front for the outlaws, who are led by Steve Fraser. Hoppy gets elected sheriff and cleans up the town with help from the Bar 20 boys.
Buck Peters arranges for Hoppy, California, Johnny and other cowboys to go to the aid of friends whose cattle are being rustled. Hoppy and California locate the rustlers' hideout and join the gang by posing as outlaws themselves, but must find a way to let the rest of the posse know where they are.
Hoppy, California and Lucky arrive at a remote inn, where Lucky expects to be married - but finds the bride-to-be in distress over her uncle, who has suddenly disappeared from the inn. Then Hoppy finds the uncle's body in the shaft of his nearby mine...
Hoppy, California and Johnny partner up with brother and sister ranch owners, two of several who are having their access to water blocked by a dam owned by a greedy merchant in town, who is intent on driving them out and taking their land for himself.
One of Hoppy's Bar 20 ranch hands is tricked into participating in nefarious activities after being subjected to hypnosis.