Deep in Alaska live a family called the Swift family. There's Sarah, a lover of baby Jesus, her firefighter husband, Chuck, and their two grown kids, Audrey, and Tyler. These four have a love for the holiday of Christmas, but not everyone feels the same way. The evil witch named Lizzie absolutely hates it.

Without warning, she kidnaps Santa Claus, and hides an atomic bomb in New York City set to explode on Christmas morning. In desperation, Santa's head elf visits the Swift family, and gives them the task of both rescuing Santa, and saving New York City.

But first they must travel around the world to find the four magical keys to acquire the mythical Rainbow Gem. With this gem they can fight the evil witch among other things they must battle, of which includes: a yeti, a dragon, a T-Rex, a giant robot, woolly mammoths, Cthulhu, and even Krampus.

Though it won't be easy as this adventure is more like a misadventure.