Quentin Coldwater has been cast out of Fillory, the secret magical land of his childhood dreams. But he can’t hide from his past, and it’s not long before it comes looking for him. He uncovers a spell that could create magical utopia, a new Fillory --- but casting it will set in motion a chain of events that will bring Earth and Fillory crashing together. To save them, he will have to risk sacrificing everything.