Lawrence Revel, celebrated in society circles for his success with women, is devoted to his son Dick and objects to his marrying Nellie, a cabaret dancer. To prove her unworthiness, Beau asks his son not to see her for 2 weeks. Unwittingly, Beau falls in love with the girl, but his attentions are refused.

Officer Terence Shannon is the head man of the Los Angeles Flying Squadron. In this capacity, Shannon does battles with ruthless opium smugglers in LA's Chinatown

When Judge Grant sentences Paul Rogers to jail on circumstantial evidence, Paul's sister Lena swears revenge.

Although Kenneth Carmont and Esther Saunders, criminal Bert Saunders' sister, love each other, Esther marries detective Elwood Collins, who agrees to stop pursuing Bert if she accepts his proposal. One night, Kenneth and Esther hide Bert, who has escaped from the police. The same night, Kenneth's father is murdered. The evidence implicates Kenneth, who cannot supply his whereabouts at the time of the crime, as that would give away Bert. Esther cannot clear Kenneth for the same reason, and because it would let her husband know that she was with her former sweetheart.