When her husband was diagnosed with leukemia, Catherine Dornan and their two young sons accompanied him to New York, during the Christmas season, for a life-saving operation. Hoping to divert the boys from worry about their father, and to temper her own near despair, on Christmas Eve Catherine takes the boys to see Rockefeller Center's famous Christmas tree. When they stop to listen to a street musician, Brian, the younger boy, sees a woman take his mother's wallet, which holds a precious mement...