When Rangers Lucky and his brother chase outlaws, the brother is killed. To find the killer Lucky quits the Rangers and robs the bank. This gets him into the outlaw gang where he learns of their next raid. Sneaking out at night he tells his girl friend who must now convince the Sheriff that Lucky is not an outlaw and that he must sent his men out to catch the gang.

Beyond the Last Frontier was the first entry in Republic's "John Paul Revere" western series. Journeyman actor Eddie Dew stars as Revere, a Texas Ranger who goes undercover to smash an outlaw gang. Meanwhile, the villains install an informer amongst the Rangers, meaning that Revere will have to take care of this guy before he can complete his assignment. While Eddie Dew was OK in the lead, his thunder was stolen by the young actor cast as "Trigger Dolan"-future superstar Robert Mitchum. The plot was a bit too complicated for a film of this nature, thus future John Paul Revere installments were a bit easier to follow.

It's 1874 and the Texas Rangers have been reorganized. But Sam Bass has assembled a group of notorious outlaws into a gang the Rangers are unable to cope with. So the Ranger Major releases two men from prison who are familiar with the movements and locations used by Bass and his men and sends them out to find him.

The Rangers are after Yackey and his gang. Posing as an outlaw, Dave arrives as Panhandle's prisoner and works his way into the gang. Tex arrives and joins Wright's committee. Tex plans a trap for the gang but things go awry when the gang catches Tex and the Committee catches Dave and both are about to be hung.

A former gunslinger is forced to take up arms again when he and his cattle crew are threatened by a corrupt lawman.

After being shot, a dying Marshal Dawson gives Dave Hayes his badge and asks him to finish his job. Dave becomes Marshal but when Bowie, the man that shot Dawson appears, he exposes Dave as an imposter. Dave is then in trouble when Edwards incites the mob to lynch him.

Jubal Troop is a cowboy who is found in a weakened condition, without a horse. He is given shelter at Shep Horgan's large ranch, where he quickly makes an enemy in foreman Pinky, a cattleman who accuses Jubal of carrying the smell of sheep.

A group of frontier businessmen set up a protective organization for the purpose of extorting money from the local ranchers.

A singing territorial ranger (Gene Autry) spots his younger brother in an outlaw gang.

'Firebrand' Jordan is a ranger sent into the high Sierras to assist the local Sheriff Ed Burns in capturing a mysterious band of counterfeiters.

The citizens and near-by ranchers of a western town are being besieged by a gang of rustlers and robbers, and a plea is made to the governor to send a troop of rangers. Shortly, thereafter a dude-costumed cowboy shows up but he only asks a lot of dumb questions and does a lot of stick-whittling as he wanders the streets and hangs out in the saloon with the regular barflies. The citizens mark him down as being 'tetched in the head.' Also, shortly after the whittler arrives, a mysterious black-masked rider begins to make life a bit tougher on them than it had been.

Murphy plays an ex-Quantrill's Raider who's released from jail with buddy Cooper to be deputized as Arizona Rangers in order to hunt down the remnant of the gang, rumored to he hiding out in a town "neer dee border" in the words of the loose-lipped saloon dancer. The goons are found hiding in an Indian mission. Murphy and Cooper pretend to want to rejoin the gang, but the bad guys catch on and brutally beat Cooper, who protects Murphy's true sentiments to the death.