Thinking that "all of the other reindeer" she hears people singing about refers to her, Olive the dog reports to the North Pole to help Santa Claus on Christmas Eve.
When Santa finds it impossible to control his mischievous elves and stop them from ruining his workshop, he brings Alvin to the North Pole to solve the problem.
Frustrated by Santa's slowness at Christmastime, Muckle the elf creates a mechanical replacement called the Deliverator and proposes a series of contests to prove that it can do Santa's job better than he can.