At the Elves' Workshop

It's December 1st and the most exciting Christmas countdown has begun! George and Matilda are visiting Granny for a festive treat of hot chocolate and marshmallows - a favourite family tradition under the twinkling Christmas Tree when they open the first door on their Advent Calendar. But things don't quite go according to plan ... just as they snuggle on the sofa together under a cosy blanket with a slice of warm gingerbread each, a great big whooshing sound comes out of the fireplace and ...