Prominent New York magazine publisher Frank Clayton visits Paris, France,with his wife Elinor and young son Dick. He is shown around the city by Benjamin De Lota, an art critic who is a contributor to Clayton's magazine, and among the people he introduces to Frank is model Mimi Chardenet. Frank is immediately taken with the young beauty, and they begin an affair. When Elinor happens upon her husband and Mimi walking together, he introduces her as a new writer for his magazine. However, when they return to New York, Elinor learns of his fling with Mimi. Complications ensue.

When bank president Leslie Morrison dips into the till, he seeks to place the blame on bank clerk David Moulton by altering the figures in Moulton's books. He lays his plan carefully, but upon leaving the building late one night, Morrison falls into an elevator shaft and is killed. Moulton, the one man known to have been there, is charged with murder and tried by district attorney Robert Murdock. Unable to afford a competent defense, Moulton is convicted and sentenced to die in an electric chair. However, Mary Reed, a stenographer who loves Moulton, appeals as a last resort to the newly elected public defender, Arthur Nelson. Nelson investigates the case and discovers evidence on the very eve of the execution, evidence that will warrant a stay. Rescued from death in the nick of time, Moulton is granted a new trial under the supervision of the public defender and is found innocent.

Tension fueled mystery follows a series of robberies to an exciting climax.

Ruth Carroll, a schoolteacher in New York's Lower East Side, meets Bolshevist Alexis Minski at her grandfather's bookstore. After Ruth complains to her superintendent about undernourished schoolchildren, Minski's ravings cause her suspension, and she joins the Reds. Meanwhile, Captain Nathan Levison, returning from the Argonne, is assigned by the Secret Service to investigate New York's radicals. While visiting the Carrolls to announce the imminent arrival of Ruth's brother Davy, who saved Levison's life but lost his foot, Levison falls in love with Ruth. Chagrined, Minski convinces Ruth that Levison plans to arrest her and her grandfather, whereupon Ruth furiously requests that Levison be killed. After Governor Alfred E. Smith signs a bill making it illegal to display the Red flag, the Bolshevists plot to assassinate him, the Mayor of Seattle, and Attorney General Alexander Palmer, but Davy, with other soldiers, break up the meeting.

Sophy, a kitchen maid, has her fortune told by a gypsy, who sees something shiny over Sophy's head: a sword, or perhaps a crown. Sophy then sets out for Paris, where she gains employment with the Zerkovitches. As war breaks out, she returns with them to Kravonia. There, Sophy meets Crown Prince Sergius and saves him from assassins, who plot to overthrow the dynasty and place Alexis, the son of the ailing king's wife, on the throne.