Two ex-cons plan to kill the range rider marshal who sent them to prison and, when their plan fails, join forces with their former boss, a crooked saloon owner who has the same idea.

The Rough Riders arrive to fight Rand, Ludlow and their gang. Buck poses as a preacher, Tim as a preacher, and Sandy as an undertaker. Buck not only wants the outlaws, but also their unknown boss.

"The Rough Riders", has U. S. Marshals Buck Roberts (Buck Jones) and Tim McCall (Tim McCoy) coming to a Texas town to visit their friend, U. S. Marshal Sandy Hopkins (Raymond Hatton), only to learn that he has disappeared, and is suspected of the murder of John Dodge (Jack Daley), owner of practically the whole town, except the hotel Sandy owns and runs when he isn't on an assignment as a Marshal. The murder has been committed by the henchmen of Bart Logan (Harry Woods), who intends to take over the dead man's property and whose men are holding Sandy prisoner to make it appear that he fled after arguing with and killing Dodge. Just before the murder, Logan sent a letter to Dodge with the news that the latter's long-missing wife is returning, and in a short while, Stella (Lois Austin), a Logan accomplice, arrives posing as the missing Ann Dodge, thus establishing her right to the Dodge property. Sandy, allowed to escape, returns ... Written by Les Adams

Ma Turner of Red Bluff sends for U.S.Marshal Buck Roberts to investigate a series of wide-spread rustling in the area. Town banker Miller, saloon-owner Duke Mason and the crooked sheriff are in cahoots with rancher John Holt, but they double-cross and kill him. His son Steve witnesses the murder and kills the sheriff. Buck arrives and arrests Steve. Marshal Tim McCall, posing as an outlaw, gains the confidence of the gang and engineers the escape, with Buck's knowledge, of Steve from the jail. Sandy Hopkins, the third Marshal of the trio, poses as a peddler and learns that the gang intends to do away with Buck and rides to the Turner ranch to warn him. Red, a Turner ranch hand but also a member of the gang, overhears Buck telling Ma that Tim is really a U.S. Marshal, and he has Miller and Mason informed. Written by Les Adams

Scully has forced Joe Collins who works on the Garcia ranch to give him information so his men can steal the family jewels. But the Rough Riders are on the job. Buck poses as a wanted outlaw to get into the gang, Tim as a cattle buyer, and Sandy is collecting information as the saloon janitor. As usual they pretend not to know each other. Written by Maurice Van Auken

The Rough Riders are after a gang of rustlers. Marshal Roberts is posing as a wanted outlaw, McCall is the Marshal supposedly after him, and Sandy is on hand as a cook. Roberts hopes his joining the gang will help bring them in.

The Rough Riders are called in to help save Master's stage line. Taggart has his gang robbing the stages and shooting the drivers. When Buck drives the next stage, Taggart's men rob it and then make it look like Roberts is part of the gang. Written by Maurice Van Auken

When two of their Marshal friends are killed, the Rough Riders are sent to investigate. They have to find the killers in a ghost town where the houses and an old mine are interconnected by secret passages and tunnels.