High school students investigate a mysterious homicide that occurred the prior holiday season, a couple notices their young son is acting strangely after a snowy forest trip to cut down a traditional tree and one family are stalked through a winter wonderland by Krampus, the Xmas demon. Meanwhile at the North Pole, Santa is fending off zombie elves.

Sam the snowman tells us the story of a young red-nosed reindeer who, after being ousted from the reindeer games because of his beaming honker, teams up with Hermey, an elf who wants to be a dentist, and Yukon Cornelius, the prospector. They run into the Abominable Snowman and find a whole island of misfit toys. Rudoph vows to see if he can get Santa to help the toys, and he goes back to the North Pole on Christmas Eve. But Santa's sleigh is fogged in. But when Santa looks over Rudolph, he gets a very bright idea...