A gang of crooks kills a gold miner while trying to find out the location of the mine. They then terrorize the miner's son to get him to reveal the mine's location.
For revenge the outlaw Morgan steals the Carruthers young son. Seventeen years later Carruthers arrives in the valley where Morgan, his gang, and the now grown Bob hide. After Morgan shoots Tracy, he tells Bob that Carruthers did it and sends Bob out after him. But unknown to Bob, Morgan has put blanks in his gun.
Sergeant Carlos Olivarez (Buck Jones) becomes entangled in the machinations of an oil baron, havoc-wreaking bandits, and the femme fatale who ruined his brother.
Heading west, Ken and Bouncer end up at the Brooks ranch where Ken is to ride Tarzan in the big race. But both the Sheriff and Edmonds are after him and he must hide both himself and the horse until race time.
When Texas Grant rides into town people think the supposedly dead Jim Rawlins has returned. After a confrontation with Utah Becker, Grant learns Jim's wife, Helen, is about to lose her ranch to Becker, so he decides to stay and pose as Rawlins in an effort to help her.
Football star Ted Radcliffe goes west to manage an inherited cattle ranch. Empire builder and cattle thief Don Paco is hounded by El Coyote (who is really Don Bob) who now has a partner in Ted. Unfortunately Ted is also falling love with Don Paco's daughter Adela.
Bill Dane and Banty quit Kell's outlaw gang. When Dane prevents Kell and his men from getting a bullion shipment, he is made Sheriff. Learning Dane is Sheriff, Kell and gang return, force Dane to give them the bullion, and make Dane a prisoner. Escaping, Dane trails the gang and engages them in a gunfight while his horse Tarzan goes for help.
A young ranch foreman, Bud Drake aka The Kid, is wrongfully arrested for the theft of six-thousand dollars from ranch-owner "Hardshell" Beckett. He escapes and with the aid of Beckett's adopted daughter, Alice, sets out to clear his name.
Tom Tyler plays a small-town blacksmith, whose reckless younger brother casts his lot with a crooked politician. When brother dear steals $5000 from heroine Margaret Morris, Tyler gallantly confesses to the deed. He eventually clears himself by rallying his fellow frontiersmen to form a united front against the villains (guess he's not so "single-handed" after all).
Jim and Buddy decide to follow their pal Tater-bug who left them for another job. No sooner do they arrive than Tater-bug gets shot in the back. Jim suspects Joe Weller but has no proof.
A cowhand and his sidekick come to the Texas border country looking for the man who had lured the cowhand's sister in bondage in Mexico. But the man doesn't want to be found and has hired some gunmen to see that he isn't.
The Murdock's bank is in trouble. So they ship money on the train and rob it to get back the money plus the insurance, Bonner and his two pals recover the money only to be thrown in jail.