Jim Hollis, the son of a wealthy stock broker, goes on a visit to his chum, Henry Ward. At Henry's home, he meets Nan Ward, Henry's sister. They become engaged. Nan receives a letter from her wayward twin sister, Katherine. She decides not to tell him of her sister's existence. Jim is called home on business. He greets his father and shows him the picture of his fiancée. Unfortunately, Jim sees Katherine in the company of several notorious people. Thinking it is Nan, he is heartbroken and stubbornly refuses to speak to her. Several months elapse in which Jim is on the downward path. Nan in the meantime has received a letter from her wayward sister, asking her to come and see her. She and her brother leave for the city. Jim sees Katherine in an automobile, jumps on behind and follows Katherine to her home. He comes to her thinking it is Nan, is about to kill her when Nan and her brother come in. Jim is thunder-struck. Explanations are made and all ends happily.
