Mirabelle's mum is a witch, her dad is a fairy, and she is a bit of both. When Mirabelle goes off to witch school she promises not to cause any mischief . . . But then potions class goes a bit wrong and flying practise is a disaster. Soon enough, Mirabelle finds herself getting up to some seriously mischievous behaviour. Hopefully, with the help of her best friend, Carlotta, she can put everything right before home time.