She really doesn't like tests, or maths! Maybe, Isadora could pretend to be ill so she can stay at home instead? Isadora calls her naughty cousin Mirabelle for help and she gives her a spell that will help Isadora get out of the test. To Isadora's delight, it works!

But between a potion mishap and magic pox fluffballs bouncing around all over the place, Isadora starts feeling a bit guilty. Luckily, her mum is on hand to help set things right and together they come up with a new, magical way to say goodbye to the magic pox and even make revising for the maths test fun!

With irresistible pink and black artwork throughout by author/illustrator Harriet Muncaster, Isadora Moon is a unique heroine with an out-of-this-world family!