Maury Brady, a product of New York's East Side, has learned the craft of safe-cracking and shoplifting from her uncle, "Nunc." While "working" a department store, she captures a lost poodle belonging to Mrs. Hardage, wife of a millionaire. When Maury later is caught lifting some lace, Mrs. Hardage vouches for her, takes her into her home, and puts her to work on a crusade against profiteers. The fiancé of Mrs. Hardage's daughter, Captain Ransom, is attracted to Maury, who consequently is asked to leave. Before leaving she takes a paper proving Mr. Hardage to be one of the country's most unlawful profiteers. She shows the paper to Ransom, who, deciding not to join the company, uses the evidence to bring down the cost of foods. Maury says yes to Ransom.