Nan, a girl who has grown up in a den of thieves, runs away to avoid the attentions of the leader, Tony. She seeks the country and falls fainting at the door of a fashionable residence. Its young owner, Margaret Lyle, takes her in and after she is restored to health, makes her a servant in the household. Margaret is engaged to Arthur Ellis, who, day by day, finds his thoughts turning to the pretty little witch of the slums. He is the only man who has ever been kind to her and her heart goes out to him. Then, one day realizing that this is not loyal to her benefactor, she runs away, back to the old life. Tony plans to rob Margaret’s house: the girl cannot dissuade him, but she refuses her help. They set out after locking her up. She breaks the window and, jumping into a taxi, rushes to the house with two policemen. They arrive in time to prevent the burglary and Nan, jumping in front of the other girl, receives Tony’s bullet and dies.