After helping to dislodge Santa Claus from a chimney, Elmo is rewarded with an enchanted snow globe to make three special wishes -- and he decides that every day will be Christmas, his favorite day of the year. But with help from Lightning, a reindeer in training, Elmo learns that too much of a good thing isn't the best idea. Maya Angelou, Charles Durning and Harvey Fierstein make appearances and "Sesame Street" cast members turn up in cameos.