After escaping from jail, outlaw Wes McQueen is convinced by his old partner in crime to do one last heist.
When Billy Carson's uncle is lynched as a supposed rustler, Billy arrives looking for the murderers. He finds that Steve Kirby holds a forged note on his Uncle's ranch. When Kirby sees that Billy means trouble for him, he has him framed for murder. Then just as he is inciting the mob to lynch him, Billy's new friend Doc Jones is trying to break him out of jail.
A city girl on a bus tour of the West encounters a handsome rodeo cowboy who helps her forget her city suitors.
Dorn is after the rancher's land and is trying to stop Banker Brady from helping them. When his man Hammond kills Brady, there is a run on the bank. When Rocky volunteers to ride to the next town for money, he is ambushed by Dorn's men, loses his memory, and is jailed for supposedly stealing the money.
Burton is after Clark's ranch. He gets the banker to refuse to renew Clark's note and then sends his men to rustle his cattle. Hoppy is Clark's new foreman and is on to Burton's scheme. But just as he learns of the rustling and is about to go after the gang, the Sheriff arrives and arrests him for hiding Johnny who has been accused of robbery.
To get the three needed business men to visit the Stevens mine, Roy stages a ride with the Vacaros and has them as honored guests. Seeing a chance to make a lot of money, gangster Harmon joins the ride and then has his men kidnap the three. Having filmed a fake holdup earlier, he uses the film to convince the Sheriff that Roy and the boys were the Kidnapers.
The nefarious Dr. Fu Manchu searches for the keys to the tomb of Genghis Khan, in order to fulfill a prophecy that will enable him to conquer the world. His nemesi, Dr. Nayland Smith and his associates fight to keep the evil doctor from getting his hands on the keys. In 1943 the serial was edited together into a feature movie also called Drums of Fu Manchu.
The mysterious Don Del Oro ("Lord of Gold"), an idol of the Yaqui Indians, plans to take over the gold and become Emperor. Francisco was put in charge of a legion to combat the Yaqui tribe and protect the land, but when attacked Zorro came to his rescue. Francisco's partner recognized Zorro as the hidalgo Don Diego Vega, then ask him to take over the fighting legion as his alter-ego Zorro.
Homesteaders are moving into the valley settled many years ago by rancher Craig Dolan. He wants to keep them out by legal means but his nephew Bart brings in outlaws to drive them out. The Lone Ranger is on hand to help the homesteaders battle Bart's men as he overcomes traps, ambushes, burning buildings and other obstacles in his attempt to bring peace to the valley.
The Cattlemen's Association has called in the Mesquiteers to find cattle rustlers. They get Tex Riley to pose as Stony so Stony can arrive posing as a wanted outlaw. This gets Stony into the gang of rustlers and he alerts Tucson and Lullaby as to the next raid. But Hartley is on hand and unknown to anyone is the rustler's boss and he joins the posse with a plan that will do away with the Mesquiteers.
Learning of Walters' inheritance, Larson kills him and assumes his identity. When Larson's men try to kill Walter's niece Lola, Jack Lane breaks it up. This leads to a showdown with Jack outnumbered by Larson and his gang. Having saved Loma's life earlier, he has Fuzzy ride for him and his men.
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.
Sheriff John Higgins quits and goes into prospecting after he thinks he has killed his best friend in shooting it out with robbers. He encounters his dead buddy's sister and helps her run her ranch. Then she finds out about his past.