In the slums of New York, David Darrow runs a settlement house called "The Angel Factory" in which he tries to help those oppressed by tenement life. In the course of his work, Darrow meets Florence, an innocent young girl of the slums, and is attracted to her sweetness. Betty, Darrow's snobbish...
While honeymooning in Paris, wealthy John Battleby Watts is persuaded to purchase a $20,000 necklace for his capricious young wife. When the jeweler refuses to accept his check, John heads to the bank for the necessary funds. En route, he passes a little shop specializing in imitation jewelry....
During World War I, John Stevens invents an anti-submarine device, but the plans are stolen by two German spies, the Baron von Wiederholtz and Madame Elsa, who flee to a New York hotel. Stevens' daughter Alice pursues the spies hoping to retrieve the plans.
