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 secretly wishes she’d chosen a different Happy Ending, she reopens the gates to the School for Good and Evil. But the world she and Sophie once knew has changed. Witches and princesses, warlocks and princes are no longer enemies. New bonds are forming: old bonds are being shattered. But underneath this uneasy arrangement, a war is brewing and a dangerous enemy rises. As Agatha and Sophie battle to restore peace, an unexpected threat could destry everything, and everyone, they love – and this time, it comes from within.