West of Chicago

Ann Lytton arrives in a small Arizona town just as ranchman Bruce Baynard brings a man into the hotel who is unconscious from drink. The man proves to be Ann's husband Ned, whom Bruce takes to his ranch in order to reform. When Ann comes to visit, Ned accuses her of having an affair with Bruce and, to punish her, he forces her to go to the mine which he has swindled from Benny Lynch's father. Fearing Lynch's vengeance, Bruce has warned Ann not to allow Ned near the mine, and so Ann sends Bruce an "SOS" via his horse Abe. Bruce manages to save Ned, but Lynch finally exacts his revenge by killing him, thus freeing Ann to marry Bruce.

Enid North, who is engaged to manufacturer John Barr, secretly takes a business course and gets a position in Barr's offices, without his knowledge. (The general manager has been instructed to give her anything she wants.) Attracting the attentions of the office men, she is threatened with dismissal by Barr, and she returns her engagement ring. She suspects John of being unfaithful when she sees him comforting a cafe performer. Enid visits a roadhouse with Amos Lott, who unknown to her is married and has a brood of children; they barely escape detectives who mistake them for criminals; and at Lott's home Enid is berated by his wife. She discovers that Barr has been following her, and confessing her folly she begs his forgiveness.

Trooper O'Neil is out to get his man -- in this case, whoever murdered Jacob Dell. He poses as a trapper and heads for Saskatchewan country, where he meets and falls in love with Marie.

Masked bandit The Lincoln Highwayman terrorizes motorists on California highways. His latest victims are a San Francisco banker and his family on their way to a party. While the masked highwayman holds them up at gun point and steals the women's jewels, the banker's daughter Marian (Lois Lee) finds herself strangely attracted to him. When the family finally arrives at the party, they tell the guests their tale. Secret Serviceman Steele takes an interest in their encounter and starts working on the case. Jimmy Clunder (William Russell) arrives late and while talking to Marian a locket falls out of his pocket. Marian recognizes it, but Clunder claims that he found it on the Lincoln Highway. She begins to suspect that he is the Lincoln Highwayman, as does Steele, Clunder's rival for Marian's love.

A wealthy minister in a mining town is something of an advocate for the miners' safety, but he doesn't really get involved in the issue. He is soon snapped out of that attitude, however, when his daughter is trapped underground in a mine explosion, along with the mine's owner.

Lorimer is wanted for a crime he didn't commit, and "Red" has his hands full keeping the old man safe from the sheriff and his posse.