Ethel, the daughter of Kate, a boarding house mistress, is loved by Snooky, a social pirate, and one of her mother's boarders. Babe, another roomer at Kate's house, and head salesman at the ribbon counter at Cohen's department store, is also in love with Ethel. On account of Babe's effeminate manners and small salary, Ethel refuses to have anything to do with him. Filled with a craze for diamonds, Ethel secretly covets the beautiful pendant worn by Mrs. Carver, a wealthy roomer living at Kate's domicile. Snooky also covets the pendant, but with an entirely different motive. Watching his chance, Snooky is about to steal the pendant when he is interrupted by Babe, who also has designs on the jewels. Before Babe can escape he is discovered by Mrs. Carver and Babe seeks safety in flight followed by the irate husband of Mrs. Carver. The husband follows Babe, who, after a perilous journey across roof tops, rushes into the boarding house just as Snooky, with the pendant in his pocket, is trying to escape. He seizes and exposes Snooky, and receives the praise of Ethel and the others.