Harry Mason is called home by wire, but when he arrives, he finds that his wife Ruth has just died in childbirth. Thoroughly shaken, Harry refuses to look at the baby, and after locking the door to the room that Ruth had prepared as the nursery, he departs for Europe, leaving little Martha in the care of her grandfather, Colonel Mason. In an attempt to escape his grief, Harry travels throughout the world, but the spirit of his wife continually distracts him, and he finally decides to return home. Unaware of her father's identity, Martha, now a charming and spirited little girl, befriends Harry and soon convinces him to unlock the nursery door. On the bureau, he finds the letter his wife had left him years earlier, requesting that he care for their child in the event of her death. Realizing his blindness, Harry takes Martha to his heart.