Mai and the tricky transformation

"Determined to earn her wand twinkles at the Bibbidi Bobbidi Ball, Mai Magicwhisp decides to do all of her spells at once. But her plan to perform the most magical transformation ever is put on hold when she accidentally turns one of her classmates, Tatia Shine, into a unicorn! Now Mai has to work together with Tatia to reverse the transformation before Tatia is stuck as a unicorn forever"--Provided by publisher.