A man searching for a stolen army payroll is joined by several men after the reward money.
Ten years after the Civil War has ended, the Governor of Texas asks Leander McNelly to form a company of Rangers to help uphold the law along the Mexican border. With a few veterans of the war, most of the recruits are young men who have little or no experience with guns or policing crime.
Lean, mean Texas Ranger Jack Benteen locks horns with a former friend, Cash Bailey, now a ruthless drug kingpin. Though they're on opposite sides of the law, they share a love interest in the sensual Sarita. When a crew of rogue soldiers descends upon the border town for an off-the-books mission, all roads lead to a bloody, to-the-death showdown, as loyalties shift and the lines between good and evil are blurred.
Marshall Jed Cooper survives a hanging, vowing revenge on the lynch mob that left him dangling. To carry out his oath for vengeance, he returns to his former job as a lawman. Before long, he's caught up with the nine men on his hit list and starts dispensing his own brand of Wild West justice.
Having fled to Mexico from the U.S. many years ago for killing his father's murderer, Martin Brady travels to Texas to broker an arms deal for his Mexican boss, strongman Governor Cipriano Castro. Brady breaks a leg and while recuperating in Texas the gun shipment is stolen. Complicating matters further the wife of local army major Colton has designs on him, and the local Texas Ranger captain makes him a generous offer to come back to the states and join his outfit. After killing a man in self-defense, Brady slips back over the border and confronts Castro who is not only unhappy that Brady has lost his gun shipment but is about to join forces with Colton to battle the local raiding Apache Indians.
Cal Stanley goes undercover as a beef buyer in order to catch the gang responsible for stealing the area's cattle.
Texas Ranger Jake Cutter arrests gambler Paul Regret, but soon finds himself teamed with his prisoner in an undercover effort to defeat a band of renegade arms merchants and thieves known as Comancheros.
Texas Ranger O'Brien has an outlaw twin brother. When his sibling is killed, O'Brien assumes his identity in order to infiltrate a gang of stagecoach robbers.
Jolley is the leader of the Devil's Brand gang of rustlers. When Molly Dawson sends for the Texas Rangers, Tex, Jim, and Panhandle arrive pretending not to know each other. But eventually their identities become known and they are captured by the gang.
To prevent a lynching, Ranger Tim lets two outlaws go saying he will get them later. This gets him kicked out of the Rangers and he goes across the border and joins Big George's gang who are running contraband. But the outlaw Jimmy overhears Tim tell his sister that the dismissal was a fake. Big George and his gang then go after Tim and trap him in a cabin.
Sent to Mexico to buy a bull, a Wyoming cowhand (Doug McClure) teams up with three Texas Rangers to solve a robbery/murder.
Two Texas Rangers (Tom Tyler, Rex Lease) nab smugglers and rescue a woman (Margaret Nearing) from a runaway wagon.
The town of Rio Blanco is the center of a fight over the statehood issue and is a perfect setup for Lon Bryson and Chuck Bowers, who organize a couple of phony protection associations. Opposing them is Henry Waterman, publisher of the Rio Blanco Herald. He and his assistant, Andrew Jackson Weems, send for the help of the Territorial Rangers. One of the dispatched Rangers is Jeff Lanning who, unknown to him, has a brother as a member of the gang under an assumed name of Bob Mitchell. Jeff is so shocked at seeing his brother gun down Waterman that he is unable to act in time to prevent it. Unable to explain the cause of is inaction, he is suspended by the governor. Unable to persuade his brother to quit the gang, Jeff, with the aid of Weems and Waterman's daughter Carol, begins his quest to bring the outlaws to justice.
A Texas Ranger turns deputy sheriff; a woman wants him to kill her cattle-baron husband.
Two Texas Rangers have their worlds rocked by a wrongfully accused female bandit.
Tex Wyatt is blamed for a murder actually committed by Ransom and Holman, a couple of thieves. Tex manages to escape and is reunited with his two ranger pals Jim Steele and Panhandle Perkins, both of whom are working undercover as performers in a medicine show.
Two down-on-their-luck former outlaws volunteer to be Texas Rangers and find themselves assigned to bring in an old friend, now a notorious outlaw.
While passing through the town of Bannock, a bunch of drunken cattlemen go overboard with their celebrating and accidentally kill an old man with a stray shot. They return home to Sabbath unaware of his death. Bannock lawman Jered Maddox later arrives there to arrest everyone involved on a charge of murder. Sabbath is run by land baron Vince Bronson, a benevolent despot, who, upon hearing of the death, offers restitution for the incident.
The Texas Rangers chase down a gang of outlaws led by Butch Cavendish, but the gang ambushes the Rangers, seemingly killing them all. One survivor is found, however, by an American Indian named Tonto, who nurses him back to health. The Ranger, donning a mask and riding a white stallion named Silver, teams up with Tonto to bring the unscrupulous gang and others of that ilk to justice.
When Tim Barrett rides into Carabinas, his reputation as a lawman precedes him. Rescuing Polly Loomis from the unwanted attentions of a saloon ruffian, he learns her mother married ranch foreman Nick Grindel shortly before her death, and left everything to him in her will. Nick has proposed marriage to his stepdaughter, and she fears violence if her hot-blooded brother Dick finds out. When a body is found at the Bow Knot, Tim barely rescues Dick from a necktie party and is deputized to investigate when Dick confesses to a crime he didn't commit.