Charles Starrett once more dons the mask of mysterious do-gooder "The Durango Kid" in Columbia's Challenge of the Range. Wandering cowboy Steve Roper (Starrett) is hired by the Farmers Association to stem the activities of a group of gunmen who are driving ranchers off their land. The most likely suspect turns out to be innocent: the real culprits are within the Association itself. With the help of the chief suspect's son, Roper brings the crooks to justice.

The cattle herds of some Arizona ranchers are being stampeded and stolen, so the Arizona Stockmen's Syndicate sends ace investigator Steve Reynolds in to find out who is responsible. Steve poses as a vicious gunslinger named Buck McCloud to work his way into the gang, and then becomes the Durango Kid to disrupt the activities he learns about. Jud Temple is the loyal fiancée of town banker Grat Hanlon who turns out to be the brain-trust behind the gang.

Tal is in a lot of trouble. Seems that his father has been murdered while he was in Montana and they put the blame on him. Also, he has been framed and sentenced to 10 years hard labor for another murder which he did not do. The crooks need convict labor to build the dam so they convict innocent people for a pool of cheap labor. But Karan believes that Tal, using the name Smith J. Brown, could not be a killer. Unknown to her, her step brother, Hub, is part of the gang.

U.S. Marshal Johnny Mack Brown once again goes undercover in this Nevada Mckenzie series entry from Great Westerns Prod./Monogram. Masquerading as a parson and a drifter, Sandy Hopkins (Raymond Hatton) and Nevada Jack McKenzie (Mack Brown) come to the aid of the beleaguered residents of Goldville, a small ranching community being terrorized by greedy saloon keeper Ace Benton (Kenneth MacDonald) and his gang of cutthroats. Unbeknownst to the citizenry, the railroad is planning to build tracks through town and Benton is attempting to secure the land by scaring off the settlers.

Landry has Sam Martin killed. When Tim and Chito find Martin and his son, Chip says Matt Potter was responsible. But when Tim and Chito start their search, no ones knows a Matt Potter.

A Royal Canadian Mounted Police sergeant must mediate a land rights dispute between an advancing railroad construction gang and French Canadian trappers in the rugged Northwest Territory of Canada.

Krag Sabine has aroused the wrath of all the ranchers by stealing their land with the aid of his henchmen, led by Ace Barco; when Lafe Martin objects, the outlaws shoot him down. Lucky Randall promises Ann Martin he will avenge her wounded father. He sets up headquarters on the Martin ranch and sends for Bob Merritt and his men, the Texas Playboys (Jesse Ashlock, Leon McAuliffe, Cotton Thompson, Junior Barnard and Luke Wills). Krag organizes his remaining men for an attack on the ranch. Lucky's men get the upper hand but Krag escapes with Ann as his hostage.

Brad Buckner has just bought a ranch. Murdock keeps his rustled cattle on the ranch and sends his men to kill Buckner just as they did the previous owners. But Buckner and his men foil their attempts and decide to search the ranch. To throw Buckner off he kidnaps Buckner's girlfriend and the Sheriff and makes plans to drive the cattle across the border.