Pete Marlan is a gambler with an unsavory past. Suspected of being an outlaw, Pete plays along with this misconception, the better to infiltrate a gang of smugglers. Along the way, he clears the name of the brother of Texas Ranger Mike Donovan, and helps patch up the romance between Donovan and heroine Bernice.
Capt. James Stewart pursues the bandit "The Kinkajou" over the Mexican border and falls in love with Rita, though he suspects that her brother is the bandit.
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.
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.
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.
The architect Georg Wall is sitting in his spacious Stockholm apartment. He has been waiting several hours since lunch for his significantly younger wife, Lola Wall, to appear.