It's turning out to be a pretty rotten Christmas for the Saunders family. Having just moved to Edmonton, Canada, all the way from Los Angeles, Brian and Danny are missing their friends, their dad Wayne has just been laid off, and their mom Judy is stranded at LAX due to Yuletide overbooking. Now Dad's alone to shop for presents he can't afford at one of the largest, most magnificent, malls in the world. But while Dad's off fighting the throngs in this shopalooza of stores, Brian and Danny are stuck watching their 6-year-old sister Mary while she stands behind a long line of people waiting to see old St. Nick. Mary's still full of the Christmas spirit, and the unselfish wish she made for her father while perched on Santa's knee, is about to land right at her feet--except it's counterfeit. It seems that Mary just asked the jolly fellow in the red suit for a million dollars to make her daddy happy, and Leo and Sheldon Cardoza, two bumbling crooks, have just lost a satchel of fake Ben Franklins. But the Kooky Cardoza brothers, or as their Cruella de Ville boss calls them "the worthless pieces of lint," have the situation under control. They just spotted two kids run off with the copied cash, and how hard could it be to catch a couple of kids? With older brother Danny off falling for a blonde beauty he spotted on the beach (yes, this glorious mall has its on wave pool!), younger brother Brian and innocent Mary are on the spending spree of their lives. These inventive adolescents have a plan to lead the clumsy criminals right to the law, all while discovering a magical wonderland right beneath the mall.