Brothers who rode with a notorious outlaw gang led by Frank and Jesse James decide to go straight and try to get pardons so they can return to a law-abiding life.
In 1887 Arizona, in the context of the settler-vs-cattleman struggle, two rancher brothers fall in-love with the same settler girl while crooked businessmen try to swindle both sides.
The bad guys dynamite a fish hatchery. They're trying to put the hatchery out of business so they can get possession of oil underneath the lake. Roy is a game warden investigating the dynamiting.
The story of Andy Bryant, a University of Arizona student whose grades suffer because of his preoccupation with an upcoming intercollegiate rodeo. Andy's father is more interested in embarrassing a rival at the rodeo than he is with his son's academic progress. When his lack of focus nearly causes a tragic accident in the university chemistry lab, Andy decides to hunker down and study.
Gene is hired to be foreman of the Big Sombrero ranch by Jim Garland, who is handling all the business affairs of the owner, Estrellita Estrada, who is more interested in going to America than taking care of her Mexican holdings. Gene, discovering Garland's plan to run all the Mexican rancheros off the ranch, turns against his boss and shortly finds himself in the middle of cattle stampedes and an avalanche started by Garland's men.
Posing as unemployed musicians, Roy Acuff and his Smoky Mountain Boys, are being helped by Ted Gibson owner of the Harmony Inn in San Antonio, Texas. Gibson is impoverished because he keeps buying his kleptomaniac Uncle Zeke out of trouble, supports his Ma, and Grandpa. He wants to marry Jean Wallace, and doesn't know that Acuff and his musicians are traveling incognito for the radio show "Who Am I Helping?" If he guesses their identity, he wins $100,000.
Silver is being smuggled across the border and the secret passage goes through Betty Long's basement. When Steve arrives he gets tangled up with the rustlers who are now going to have the Durango Kid to contend with.
Banker Ned Owens refuses to call in the many unpaid loans made to the local ranchers as he knows they are being terrorized by a gang of crooks and unable to pay. But the secret leader of the gang is James Taylor large stockholder of the bank.....
Cowhand Drake discovers gold on the ranch of his boss, Joe Stuart and makes a deal with crooked lawyer Mel Porter to induce Stuart to sell. The latter refuses, and also orders Bill Cameron not to see his daughter Laurie again. Foreman Johnny Mack, after intervening, quits after he sees Stuart hit Laurie while quarreling over her proposed marriage to Cameron. Peddler Alibi Terhune witnesses the killing of Stuart by Clem Kettering, hired by Porter, and is taken prisoner. Cameron is blamed for Stuart's killing, escapes jail, but is persuaded by Johnny to go back and stand trial. Johnny rescues Alibi and the two work together on clearing Cameron's name, and bringing the real culprits to justice.
Jack Garrett interrupts a stagecoach holdup where he meets Fuzzy (The town's stagecoach driver, station agent, baggage agent, and sheriff) and banker Jim Thorn. The trio team up to prevent robberies of Thorn's bank by Clem Yantis's large gang.
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.
Rocky Lane hits the trail when he gets word that one of two brothers in a partner-ship mining project has been killed by outlaws trying to gain possession of the mine. The other brother Nugget Clark wants no part of the law, and is particularly set against the young sheriff courting his niece Trudy.