A pickpocket falls in love with a newspaperman. When he is sent off to war, she disguises herself as a boy, joins a gang and sets out to save him.

Alias "The Humming Bird," Toinette is leader of a gang of thieves in the Montmartre section of Paris. American reporter Randall Carey falls in love with her. The Great War breaks out, Carey enlists, and Toinette inspires her gang to fight for France. Toinette, arrested as she is giving her spoils to the church, is imprisoned. When she hears that Carey has been badly wounded, she escapes and is reunited with him. Carey recovers, and Toinette receives the War Cross for her work in recruiting some heroic soldiers.—Pamela Short