Sophie and Agatha are back in Gavaldon, living out their happily-ever-after, but life isn't quite the fairy tale they expected. When Agatha wishes she'd chosen a different Happy Ending, she accidentally reopens the gates to the School for Good and Evil, and the girls find that the world they knew has changed. Witches and princesses reside at the School for Girls, where they've been inspired to live a life without princes, while Tedros and the boys are camping in Evil's old towers. A war is brewing between the schools, but can Agatha and Sophie restore the peace? Can Sophie stay good with Tedros on the hunt? And whose heart does Agatha's belong to - her best friend, or her prince?