When a friendly cabbie tells two young sisters the story of a boy named Leo who moved to Manhattan with his family, a magical adventure begins. While adjusting to the big city and enjoying the days leading up to Christmas, Leo accidentally loses his dog Ramona in Central Park. Leo is devastated by his loss until a magical creature named Little Spirit appears. Leo and Little Spirit venture out on the journey of a lifetime, taking in the festive surroundings of the city and meeting people from all walks of life.