Christmas is the busiest time of year at the North Pole, when Father Christmas makes presents to deliver across the whole world… and when everyone gets ready for Santa’s Christmas Party! But this year somebody has been up to mischief… Dotty the Elf’s decorations have gone missing, Dasher the Reindeer’s party games are broken, and what has happened to Pompom the Penguin’s Christmas music? It looks as though somebody wants to stop Santa’s Christmas Party – and that someone is Jack Frost!