Just before the Civil War (but after the South has seceded), Southern saboteurs try to prevent railroad construction from crossing Kansas to the frontier; army captain Nelson is sent out to oppose them. As the tracks push westward, Nelson must contend with increasingly violent sabotage, while trying to romance the foreman's pretty daughter Barbara.
Banker Mason is after the ranchers land so he can resell it to the railroad for a profit. He has the railroad agent killed and replaces him with his stooge who then offers even less than Mason. But Rocky eventually suspects Mason and when Bill Anderson informs him the agent is a fake, they head out after Mason
Montana ranch owner Cyrus Bigbee sends his foreman, Gene Autry, and Rawhide Buttram to his Canadian timber land to stop the marriage of his daughter Sandy to Todd Markey, whom he dislikes. Sandy wants to turn the property into a dude ranch, with Carolina Cotton and the Cass County Boys (Fred S. Martin, Jerry Scoggins and Bert Dodson) among the entertainers, and runs up against local timbermen who want it for cutting timber. When a Mountie is murdered, with suspicion pointing to Todd, Gene finds the real culprit and brings peace to the area.
Gene Autry is back in the saddle again as an undercover detective in this action-packed Western complete with a showdown. Gene poses as a jailbird to wangle the truth from a boy (Dick Jones) suspected of stealing an Army payroll. When the youngster escapes from lockup and rejoins his family's medicine show, intrigue is in the wind as Gene tries to solve the mystery of the missing money and to save the lad from a vicious mob. Pat Buttram co-stars.
Martin retired from his job as a hero because of his marriage to Rosario, a beautiful and ambitious girl who passed through the workshop where he works. However, Martin has to return in principle to help a friend from robbers.
Will Kane, the sheriff of a small town in New Mexico, learns a notorious outlaw he put in jail has been freed, and will be arriving on the noon train. Knowing the outlaw and his gang are coming to kill him, Kane is determined to stand his ground, so he attempts to gather a posse from among the local townspeople.
After five years of being away, Rick Nelson returns to San Francisco to find it filled with corruption - and crooked politicians. It isn't until he meets a beautiful San Franciscan, that Nelson decides to get involved with bringing law-and-order to the city by the bay!
The Hurley's own a lumber mill and want to harvest all the timber in the valley. They kill the Forester and substitute their brother Dusty in his place. Dusty then says all the trees are infected and must be cut down. But Rex Allen is suspicious and writes to the Forestry Department and gets involved with the murders.
In 1900, unscrupulous timber baron Jim Fallon plans to take advantage of a new law and make millions off California redwood. Much of the land he hopes to grab has been homesteaded by a Quaker colony, who try to persuade him to spare the giant sequoias...but these are the very trees he wants most. Expert at manipulating others, Fallon finds that other sharks are at his own heels, and forms an unlikely alliance.
Captain Hunt of the cavalry is trying to promote good relations with the Indian chief Acoma. But Hunt's superiors in the military insist on pursuing policies that will provoke a conflict, and Chief Acoma is not willing to let himself be insulted.
A cattle baron takes in an orphaned boy and raises him, causing his own son to resent the boy. As they get older the resentment festers into hatred, and eventually the real son frames his stepbrother for fathering an illegitimate child that is actually his, seeing it as an opportunity to get his half-brother out of the way so he can have his father's empire all to himself.
Gene Autry hunts bank robbers Al Bartlett and Trot Lucas with his old friend Mike. Bartlett, to throw off his pursuers, kills Trot and his own brother. When Kitty Bartlett comes to town claiming to be the slain Bartlett's widow, Gene has to save her from the irate townspeople who are not aware that her name isn't Bartlett but she really is the daughter of a law officer slain by Al Bartlett. Ben Luder, a local hood, tricks Bartlett back into town by saying he has to fixed to have Doc Larry Taylor do plastic surgery on him. En route they meet Doc and his assistant Helen Ellis and Ben's ruse is exposed. Bartlett kills Ben and forces Doc to drive him to the railroad. Gene, in a fight atop a runaway train, captures Bartlett.
Lt. Col. Kirby Yorke is posted on the Texas frontier to defend settlers against depredations of marauding Apaches. Col. Yorke is under considerable stress by a serious shortage of troops of his command. Tension is added when Yorke's son (whom he hasn't seen in fifteen years), Trooper Jeff Yorke, is one of 18 recruits sent to the regiment.