Tiffany must gather all the witches to prepare for a fairy invasion.

A young witch-to-be named Tiffany teams up with the Wee Free Men, a clan of six-inch-high blue men, to rescue her baby brother and ward off a sinister invasion from Fairyland.

The wizards of Unseen University in the ancient city of Ankh-Morpork must win a football match, without using magic, so they're in the mood for trying everything else. As the match approaches, four lives are entangled and changed forever.