As the railroad builders advance unstoppably through the Arizona desert on their way to the sea, Jill arrives in the small town of Flagstone with the intention of starting a new life.
The conflict between a railroader and a stage line owner is being aggravated by bad guys who are sabotaging both sides. Roy and Gabby mediate the conflict and expose the bad guys.
A group of people traveling on a stagecoach find their journey complicated by the threat of Geronimo, and learn something about each other in the process.
The Range Busters head for Pinto Basin where a series of stage robberies have occurred. To try and find the gang's boss, Crash sends out a empty money box. The plan backfires when the boss has the Range Busters identified as the robbers. Thinking it is now safe, the bank sends out a big money shipment. Needing to rob the stage, the boss gets the boys out of jail so they can be blamed. But this is just the chance they need to catch the robbers.
Dusty Gardner, and other Texas ranchers, are driving a herd of cattle to Abilene, Kansas along the Chisholm Trail. Desperate need of water takes them to the Turner ranch, where Belle Turner demands exorbitant prices for the water. Dusty learns that Belle is also trying to oust Mary Lee and Montana Smith from the trading post Mary operates. The sheriff sides with Belle following a fight between the two women. Belle knows there is artesian springs under the land the trading post occupies and intends to get the property by any means.
The Range Busters investigate sabotage at a mining community and uncover a gang of Nazi spies.
Tex and his sidekicks arrive to help out his friend Jeffers, a railroad owner, only to find that he has been killed. They quickly run into trouble with an outlaw gang in their attempt to find the mysterious ghost train that supposedly runs on Jeffer's line.
Bob arrives looking for the killer of his uncle. When the Sheriff chases him and his partner Rusty, Reno thinks they are the men he is looking for and takes them into his gang. There Bob finds his uncle's gun and knows he has found the right gang. However he realizes the gang has an unknown leader and he sets out to find him.
In this WW II film meant to discourage the purchase of black market beef, the Range Busters are called on to fight cattle rustlers. This time they're up against a gang that strikes fast by hauling the beef away in trucks.
Notorious shootist and womanizer Quirt Evans' horse collapses as he passes a Quaker family's home. Quirt has been wounded, and the kindly family takes him in to nurse him back to health against the advice of others. The handsome Evans quickly attracts the affections of their beautiful daughter, Penelope. He develops an affection for the family and their faith, but his troubled past follows him.
Someone wants to kill Magpie Harper. Crash and Dusty arrive too late, Magpie Harper is allready dead.
The dangerous Ceegareet gang has control of Boom Town. No miner with rich diggings is safe from this murderous gang. Tex Roberts and his pal Slim Hunkafeller strike a pay vein and find themselves marked as the gang's next victims.
Rodeo contestants Johnny King and Corrigan meet, their fathers having been members of the Range Busters. When Johnny is knocked unconscious, time reverts to their father's era and the Range Busters are soon involved in the scheme to get Railroad right-of-way across Mother Slocum's ranch. When she is tricked into signing a release, the Range Busters find their job more difficult as the Sheriff is in with the crooks.
After a particularly brutal heist, Alex is disturbed by the actions she and her fellow gang members have just committed. Terror sinks in as she looks around the campfire and realizes that she's the only one affected by their grizzly deeds.
Wild Bill Saunders recruits a team of paroled convicts to subdue a lawless gang.
The James and Younger outlaw gangs ride into town, and it is up to the local marshal, who has lost both his nerve and his gun skills, to stop them.
In the midst of some friendly horseplay on their "Flying R" ranch, the Range Busters, Crash Corrigan, Dusty King and Alibi Terhune, are sobered by the arrival of a buckboard bearing their old friend Larry Meadows and his niece Dorrie Willard. Meadows seeks their aid against a gang of outlaws terrorizing his town. Ernie Willard, Dorrie's brother, has been taken in by Tex Laughlin who is using the Willard ranch as an undercover for his real occupation as a member of a gang of outlaws led by Tim Douglas, a supposed friend of the Willards.
The Range Busters are together again to try and stop a swindle.
Dinner time in a remote home of a prairie family turns nightmarish when a band of blood spattered outlaws break through the front door in search of food, horses, and women. Nothing is as it seems in this constantly twisting genre bender.
Tex has been sent to investigate the theft of government provisions along the border. Kildare is the leader of the outlaw gang and has his men posing as Indians. He has already killed the incoming Marshal and assumed his identity. When Tex asks too many questons, he plans to get rid of him also.