Long before Harry Potter there was Mildred Hubble. An ordinary girl who found herself in an extraordinary place: a school for witches. Now in her final year, accident prone Mildred and her fellow pupils are about to embark on their biggest adventure yet… Jealous Ethel Hallow is always out to spoil Mildred’s fun. Miss Hardbroom is opposed to all fun in general. And just as Mildred sparks some inevitable mayhem certain to upset them both, an old enemy returns with a plan for revenge that could threaten not just the Academy, but the whole world.