A doctor transplants the brain of a girl who is in love with him into a girl he is in love with.
Dr. Brandt, Expert brain surgeon Dr. Brandt, is in love with Rose Deming, a girl so young that her sexual instincts have not yet developed. On the other hand, Blanche Hildreth, a young widow, is deeply infatuated with the doctor. When Rose is injured in an auto accident, Brandt conceives the idea of transferring the brain cells of the two women, hoping to arouse in Rose the love that he feels for her. After drugging Blanche, Brandt performs the operation, but science overreaches itself as Rose becomes a girl of untamed passions. Engaged to Brandt, Rose leaves him for another man. Months later she is found in the slums, her mind blank and within a few hours of death. An operation restores her to normal condition, and she enters a convent, while Brandt marries Blanche.—Pamela Short
Dr. Brandt is a surgeon noted for his marvelous skill in brain surgery. He is in love with Rose Deming, a young girl in whom sex instinct apparently is not developed. On the other hand he is the object of deep infatuation on the part of Blanche Hildreth, the young wife of an invalid husband, who abandons all restraint in her efforts to attract him. Rose is injured in an automobile accident, and her only chance for life depends on an operation for concussion of the brain. It is then that Dr. Brandt conceives the idea of transferring to her brain cells from the brain of Blanche, hoping thus to rouse in the former the love which he feels for her. By drugging a cup of tea, he gets Blanche into the same hospital with Rose and in secret and perilous operations interchanges brain cells. Science, however, overshoots its mark. Rose becomes the girl of unrestrained passions, responds to the doctor's feelings and they become engaged, only to fall madly in love with another and run away with him, leaving the surgeon to the tender sympathies of the other subject of his scalpel. Months follow and detectives find Rose in a resort in the slums. Her sister and friends take her away, her mind blank and within a few hours of death. Dr. Brandt, his skill as a surgeon taken from him by grief and remorse, is summoned to the hospital. His former assistant sees in an operation a chance to save Rose. "Remove all moral weakness from her brain and return it to mine," he orders the surgeon. Rose lives many contented and useful years in a convent and Dr. Brandt becomes the husband of the woman he had sought to save from the gutter.