A dying Marshal gives his identification papers to Tom. After Tom arrives in town, the papers drop and are found during a fight so Tom decides to assume the Marshal's identity. Mason, the chief, now sends Rattler, the killer of the Marshal, to also kill Tom. But when he overhears Tom is a fake, they change their plans and now go to arrest Tom for the murder of the Marshal.
Insurance Agent Ted Sanders has been called in to investigate a robbery and murder. A deputy also arrives to investigate. But unknown to Ted, the Deputy is a fake and actually part of the gang. The fake plants some of the money in Ted's room so he can arrest him. Then with the help of the gang he plans to finish Ted off.
A sheriff tracking a gang of rustlers discovers that one of them is the brother of his fiance.
Funds are embezzled and a fur trapper is murdered. Rin Tin Tin to the rescue!
Bolton has organized a feud between the Rork's and the O'Neil's. He has rustled cattle and killed a man putting the blame on Danny O'Neil. Tom Rork has found a bullet with markings on it that he hopes will clear Danny and bring in the real killer.
The Millionaire Kid is young Tommy Neville whose wealthy parents, Thomas and Gloria Neville are preparing to fight it out in divorce court.Tommy runs away from home. The private detective assigned to watch him tells Mrs. Neville he has been kidnapped. She immediately suspects her husband. Meanwhile, Tommy is selling newspapers in another city. He is attacked by a bully, and is rescued by gangster Terry Mallon and his daughter Kitty. Unaware of his identity, they take him to their beach home. Reporter Breezy Benson is sent to interview Mrs. Neville about the divorce, and is fired when she won't talk to him. He meets Kitty at the beach and is intrigued by her. He meets her father, who is curious but not suspicious as news of the alleged kidnapping has not been reported.
Dad Brooks is in financial trouble and needs to sell a lot of horses. But they are being rustled and needing help, he sends for Tom. Tom looks for the rustlers but eventually realizes that someone is using a wild horse to do the rustling. He finds the secret entrance used by the rustlers to hide the horses but soon finds himself a prisoner.
Tom Henderson is made Sheriff of Chico to fight Slim Walker's gang. Unknown to Tom, banker Luke Hargrave is the gang's real boss. Dad Kane is looking for the man that blinded him whom he can remember by his voice. He finds him when the gang robs the bank and Tom chases them down.
Jack is looking for the man that was responsible for the death of his sister after he hired her as a school teacher. When he runs into school teacher Ann who was just hired by Corey, he soon realizes Corey is the man he is after. Lacking proof, he works on Corey's nerves hoping to get a confession from him.
A fur trapper catches another trapper trying to steal his furs. He stops the thief, but later on the furs are stolen anyway. Rin Tin Tin Jr. tracks down the thief to try to get the furs back.
A cop is fired from the force and attempts to solve a string of truck holdups.
Jerry Hixon's ranch is being besieged by raiders so Ben sends for his friend Bud. When Bud arrives and finds that the outlaw Texarkana Pete has been captured, he buys Pete's clothes and posing as Pete joins the outlaw gang. But he is quickly in trouble when his masquerade is exposed.
Western, featuring Rin Tin Tin Jr., about a man trying to find an old friend in a town that is trying to deceive him.
A newly hired police chief vows to clean up a notoriously corrupt police department. When he is murdered, investigators find that there is no shortage of suspects, most of them being fellow cops.
Jack rides into trouble when he meets up with Bill Meeker and his outlaw gang. Rescued from the gang's clutches by Don carlos, he joins forces with Carlos and with the help of Lolita who learns of the gang's next raid, they go after the culprits.
Tom Evans is a young cowboy orphaned by a band of rustlers. Seeking revenge, Tom pretends to be a notorious ex-con and manages to worm his way into the gang in order to get the goods on the bunch.
Deputy Indian Agent is framed for the murder of a captured fur thief actually killed by his boss in rivalry for affections of a saloon girl.
A young man gets mixed up with a stolen necklace and a gang of ruthless jewel thieves.
The Transcontinental Broadcasting Company sends a sound truck and equipment to a ranch to obtain an audition from "Santa Fe" Evans and his musical cowboys (Oscar Gahan, Lloyd Perryman, Robert "Curley" Hoag, Rudy Sooter and Sherry Tansey.) Carver, arch enemy of Evans and a rival for the love of Carol Sheldon, fails in an attempt to spoil the audition. Carver frames Mr. Sheldon and Carol's brother Buddy on a charge, by Al Jensen, of receiving cattle stolen from him by Evans. Carver blames Evans for all of the Sheldon's troubles and, what with one thing or another, it looks like Evans and his cowhands will miss the big broadcast.
