Anthony Peardew is the keeper of lost things. Forty years ago, he carelessly lost a keepsake from his beloved fiancée, Therese. That very same day, she died unexpectedly. Brokenhearted, Anthony sought consolation in rescuing lost objects -- the things others have dropped, misplaced, or accidentally left behind -- and writing stories about them. Now, in the twilight of his life, Anthony worries that he has not fully discharged his duty to reconcile all the lost things with their owners. As the end nears, he bequeaths his secret life's mission to his unsuspecting assistant, Laura, leaving her his house and all its lost treasures, including an irritable ghost. Recovering from a bad divorce, Laura, in some ways, is one of Anthony's lost things. But when the lonely woman moves into his mansion, her life begins to change. She finds a new friend in the neighbor's quirky daughter, Sunshine, and a welcome distraction in Freddy, the rugged gardener. As the dark cloud engulfing her lifts, Laura, accompanied by her new companions, sets out to realize Anthony's last wish: reuniting his cherished lost objects with their owners. Long ago, Eunice found a trinket on the London pavement and kept it through the years. Now, with her own end drawing near, she has lost something precious -- a tragic twist of fate that forces her to break a promise she once made.