An unmarried mother leaves a charity hospital with her newborn son; a short scene shows that the baby's apparent artist father has lost interest in her. With much anguish the mother abandons the child, placing him in an expensive automobile, with a handwritten note: Please love and care for this orphan child. Two thieves steal the car and leave the baby in an alley, where he is found by The Tramp. After some slapstick attempts to hand the child off to various passersby, he finds the note and his heart melts. He takes the boy home, names him John and adjusts his household furniture for him. Meanwhile, the mother has a change of heart and returns for her baby but she learns that the car has been stolen and faints.