Hoppy goes undercover as a gambler from the East when Bar 20 cattle are stolen by unknown rustlers. Brennan/Talbot are twin brothers (one a casino owner, the other a rancher) and Hoppy believes they provide alibis for each other while one is out committing crimes. Hoppy gets a job in the casino to learn more but is exposed when a gambling gunslinger notices him.

"Red" Davison(Buck Jones), the sheriff of Sun Dog, sacrifices his job and his good name to save his best friend, "Silent" Slade from the hangman's noose, following a framed-up court decision which sentences Slade to hang for the murder of "Scotty McKee (J.P. McGowan). Davidson allows Slade to escape from jail and follows him to aid him in proving his innocence.

When Len Stoddard wins Ted Ames ranch in a poker game he sends his brother Jake along with Ted to take over the ranch. When Jake is found murdered he offers a reward for the capture of Ted who now is believed to be a member of the Black Aces gang. Ted finds the probable location of the gang's hideout and sets out to clear himself.

Ace owns just about everything around except for the Bank, which is owned by John Ware. Ace also has his eye on Judy, but Judy only has eyes for Clay. Since Ace is a crook, he holds up the stage and has his cronies swear that Clay was the bandit which gets Clay 10 years in jail. After he gets out in 5 for good behavior, Clay sets out to find who framed him and stole the stage strongbox. Since the sheriff does not like Clay, he takes his guns away as part of his probation and it makes Clay a target for the Ace gang.

Chip of the Flying U was Johnny Mack Brown's first western entry for 1940. Brown essays the title role of Chip Bennett, foreman of the Flying U ranch. Before the second reel has tumbled over the spools, Chip finds himself falsely accused of robbery and murder. The actual miscreants are in the employ of a band of foreign gunrunners, who speak in heavily Teutonic accents. Rest assured that Chip makes short work of these bush-league Storm Troopers before the sun sets in the West. Musical interludes are provided by a group calling themselves the Texas Rangers, even though they actually hailed from Kansas City.

Bill Ralston arrives in town planning to settle down but quickly gets caught up in the fight between the townspeople and Poe Daggett and his gang. He takes the job of town Marshal and soon brings law and order. When Daggetts men ambush him he kills Poe's brother. Poe then kills Bill's friend Brant and this leads to the showdown.

A young man helps a marshal in his battle against outlaws.

A sheriff tries to prevent a range war between cattlemen and homesteaders.

West of Carson City remains one of the best of Johnny Mack Brown's Universal westerns. The story takes place in a gold-rush community where the locals are taken to the cleaners by duplicitious Eastern gamblers. When it becomes obvious that the local constabulary has been "bought off" by the crooks, two-fisted cattleman Jim Bannister (Brown) swings into action. The film's highlight is an outsized fistic brawl between the hero and secondary villain Breed, played by loose-limbed comic stuntman Frank Mitchell.

Richard Dix as Dan Taylor and Preston S. Foster as Paxton Bryce are two longtime friends seeking their fortune in Texas after the war. The two men decide, not without problems, to establish a cattle empire. Paxton becoming too ambitious, distances himself from Dan and Abby, Paxton's wife. It will only be after a personal tragedy that he will come back to his senses.