Donald Gray, living with his mother in Scotland, through the friendship of the family physician, is offered an opportunity to go to America to study medicine. He leaves with his mother's blessings. Five years later, Donald is a physician with a successful practice in New York City. One of his patients has grown very fond of him; at the same time the young physician has grown fond of this gentleman's daughter, and is engaged to be married to her. His mother resolves to pay him an unexpected visit.