The Bannister Family decides to pack it up for Christmas and go to the mountains on a fun ski vacation. What they don't know is Ted and Stewey the same burglars who broke into their house last year are at the same resort with eyes on a prize: a diamond necklace worth millions. They almost succeed with their plan until the prized jewelry is mistaken for a dog collar and once again it is up to Zeus to save Christmas Vacation for the Bannisters.