Flavia Mills (Margaret O'Brien) has been told that her Aunt Susan Bratten's (Dame Angela Lansbury's) fiancé, Steve Abbott (George Murphy), has been on a trip around the world, but in truth, he's finished his prison term. Steve wonders how he can make some money and is approached by his old associates. When Flavia discovers the truth about Steve, she loses all faith in her family and in God, and it will take a miracle to restore Flavia's belief and Steve out of trouble.