Julie (Lauren Bacall) is the caring wife of Bill (Robert Stack), a busy scientist. When Julie finds out she has a heart problem, and believes she will soon die, she adopts a child named Hitty (Evelyn Rudie) to save her husband from despair. However, after her death, his grief is so great that he cannot bear the joyfulness of the young girl. Before long, Hitty runs off in search of her missing mother. Only then does Bill realize the wisdom of his wife's gift.