Nine and her friends have broken the curse on their marvellous, magical House, and are free to travel the worlds once more! Their first stop: The Wizarding Hopscotch Championships.

There's only one problem: the House is nervous about travelling – and gets the hiccups! Bouncing from world to world with every "HIC!", they finally land at the championships, only for Flabberghast to have an unfortunate run-in with square number seven, and find himself faced with the terrible Tower at the End of Time.