Joe, Dr. Frank Clark's worthless brother, is induced to go west to make a new start in life. Shortly after the boy's departure, Ruth Sanders and her parents move into the house next to that occupied by the Clarks. Frank falls in love with Ruth, but says nothing concerning his affection. A year later, the doctor and his mother receive a message from Joe. The boy has made good and is coming home on a visit. The moment Frank sees his brother, his practiced eye fills him with foreboding. Later, the doctor learns that Joe has fallen in love with Ruth and intends to make her his wife. Then comes the discovery that Joe must never marry. The news drives the boy frantic. In an adjoining room, Mrs. Clark overhears all that passes between the doctor and his brother. The ensuing night is one of terror for Joe, but with the coming of the morning, he regains his assurance. Joe calls upon Ruth, but the girl shrinks from him in horror. Believing Frank has betrayed him, Joe hastens home and attacks his brother. The struggle brings the mother to the scene. She confesses that her sense of duty had impelled her to break the news to Ruth. Insane, Joe rushes to his room. While Frank endeavors to console his mother, the sound of a shot comes to their ears. The succeeding months reveal to Ruth that it is Frank who she really loves and she consents to be his wife.