While home in Midland, Texas on a weekend visit with the eccentric uncle who raised him, Marion ('Mary') Waclawski discovers a long-forgotten letter Uncle Joe wrote to Santa Claus. Mary keeps it to share with his girlfriend Lindsay and best friend Tommy. At first they consider the letter to be nothing more than a silly lark-what kind of grown man would write a letter to Santa? But soon Mary and Lindsay find themselves caught up in a much larger mystery,...