Swifty is framed for the murder of Alec MeNiel by the Lawyer Cheevers and the stepson Price. Then they incite the locals to form a lynch mob, but Swifty has an unexpected ally in the Sheriff who knows Price was after his stepfather's land.
Kirk Baxter has been sent to investigate murder and robbery involving gold shipments. Identifying a gang member by his bullets, he uses that man's horse to locate and join the gang. He learns the gang is tipped off to the shipments by a mine employee using carrier pigeons. But the next message reveals his true identity and he is made a prisoner.
Edith overhears Bart's plan to rob the bank so she informs Ken. But she is also overheard and when Ken goes to investigate, Bart's Henchman Prod frames him for the robbery. Thrown in jail, Ken's pal Pedro arrives with a plan to get him out.
Rigging a horse race, Don Carlos wins a lot of money. When he loses his winnings at the gambling table, he shoots the dealer with Horton's gun. Horton is arrested but cannot prove his innocence.
Before he was murdered Grandpa Martin found a gold mine. He failed to record it and now everyone is looking for Martin's old horse that can lead them to it. When under-cover Texas Ranger Autry arrives to investigate, he is accused of the murder and finds the Sheriff after him.
A half Mexican, half Irish gunman called The Irish Gringo and his pals come across a little girl wandering in the desert. It turns out her grandfather was murdered by a gang looking for the Lost Dutchman mine, a map of which is drawn on the shirt she is wearing, and now the outlaws are after her.
Lawyer Rontel has made Geologist Sheffield his prisoner and by power of attorney is using his money to buy the ranches of those driven off by his hired men. But when he goes after Hayden, Tucson and Stoney arrive and things begin to change.
Munro and his gang control the valley and are driving away all nesters. Johnny arrives, and taking an interest in Barbara McGrail, decides to help the nesters. He receives unexpected help from Barbara's uncle who is posing as Salty Smith, one of Munro's hired guns. Salty thinks Munro killed his brother and is out to get proof.
Northwest Mounted Police Corporal Jerry Hale is assigned to take over the district of a fellow-officer, and is puzzled as he had worked this district before and had been mysteriously transferred, disrupting his romance with Helen Brent, the niece of Peter Barkley, the Factor at the trading post. An accountant of the company Berkley works for threatens to expose him when his account is found $10,000 short. Barkley pleads for more time to raise the money. His opportunity arises when he learns that Helen's father and his brother-in-law, Nathan Brent, has struck it rich and is on his way to visit Helen. Barkley instructs his henchmen Carney and Breen to lie in wait and rob Brent of his gold. Brent has a premonition of trouble and buries his gold, making a map of the location. Barkley is disturbed by the arrival of Corporal Hale and goes to warn his men, and finds them already engaged in the attack on Brent. Brent's dog Wolfgang (played by a dog named Rex, or maybe the other way around)...
John Middleton is investigating cattle rustling when he is captured and tossed into a cave with Emmett, a rancher who disappeared earlier. They help each other escape and learn that a local banker is trying to scare everyone away to grab up some secret gold mines.