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.

Steve Packard is the ne'er-do-well son of an Arizona ranching baron. Upon his father's death, Steve returns from his days as a South Pacific beach bum to protect his father's estate, which has fallen into the hands of Steve's estranged grandfather. The grandfather's foreman, Joe Blenham, attempts to wrest the ranch from Steve's rightful inheritance, whether the means are legal or not.

Two families feud over possession of a valuable waterhole.

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.

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.

Seeing cattle dying of thirst, a stranger shoots a hole in Hoades water pipeline. Hoades is hoarding water trying to drive the ranchers away. Hounded by the law for stealing a pie, the stranger sees a chance to redeem himself by forcing Hoades to sell his pipeline and leave the area.

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...

As rustled cattle have mysteriously disappeared, Johnny sends for his friend Hoppy, Hoppy arrives and immediately suspects Dan Slack. Realizing his telegram about Slack was intercepted, he locks up the operator Lafe knowing he can escape. Tailing Lafe he finds a secret entrance to a mine and inside finds the missing cattle. But Slack's men also find him just as the cattle are stampeded through the mine shaft.

Hoppy is busy chasing stagecoach bandits who sing as they rob.

Lee Garvin has eloped with the daughter of a railroad man who didn't approve of the marriage. Hoppy steps in when the young man is framed for murder.

European bad guy Baron Bendor leads some local townsmen in a plot to obtain horses through theft. Hoppy and his sidekicks Lucky and Speedy must find and expose the horse thieves.

Hopalong Cassidy and Johnny Nelson ride to the mountains to help a man and his daughter save their logging business from someone who is sabotaging their efforts.