A US marshal goes undercover to bust up a bunch of rustlers.
A lady reporter and two college students search for the "Gold Special," a train that disappeared without a trace.
International con artist Martha Hicks a.k.a. Countess von Claudwig is released from another stay in prison and decides to treat her rheumatism with a stay at her estranged husband's hotel at a Wisconsin spa. There undercover, she checks in on the two daughters she abandoned as infants.
Hal Doyle, son of the prison warden, falls in love with a portrait of Mollie Dare, who runs a reformatory for ex-convicts where they may work for honest wages. To win the girl he poses as the notorious Tucson Joe and goes to the reformatory where his reputation causes the other men to fear him. The real Tucson Joe arrives but does not reveal his identity.
The robberies on Jasper Carrol's stages have been so frequent that the stage line plans to hold a stagecoach race with the winner getting the new contract. Tom foils Cal Barker's attempt to kill him and gets a confession from him that Kurt Morley is behind the robberies. But first Tom must win the race for Carrol although Morley's stages have him greatly outnumbered.
Visiting his vast properties incognito, Hugh Nichols (Tom Mix) discovers that his land agent (Cyril Chadwick) is forcing Peggy Swain (Clara Bow) and her dad (Frank Beal) off their neighboring ranch. When decent-minded Nichols demands that the agent cease harassing the farmers, the nasty villain blows up the nearby dam, flooding the valley.
A gang of crooks led by Holden steals a government code, and Cyril Gordon, a Secret Service agent who bears a strong resemblance to the gang leader, is assigned to recover the stolen documents.
A man is framed for the murder of his uncle, a bank president, and sentenced to hang. His sister and a mail clerk who's helping her discover information that may clear him, but they have to get to the governor in time to present their new evidence and get a stay of execution.
When young Eva Stanley comes home from college, she finds that her mother is deeply involved in the movement to rescue "wayward" girls. Eva's boyfriend John Gilbert is sent west on a government job, and Eva finds herself lonely and neglected. She is lured onto the yacht of lecherous Leo Spencer, the dissolute brother of the district attorney.