Olive is merrily preparing for Christmas when suddenly an old holiday favorite - about a certain red-nosed reindeer - takes on new meaning. "Olive the other reindeer?" thinks Olive. "I always thought I was a dog - but I must be a reindeer!" And while Santa and his reindeer are a bit surprised that a dog wants to join the reindeer team, in the end, Olive and her unusual skills are just what Santa needs.