Cavernum has fallen. Led by the Holy One, feeders have ravaged the city, feasting on every soul they can sink their teeth in. The only survivors are under siege, trapped behind the Palace Wall. Queen Roselyn Malik bears the daunting responsibility of saving them all. To do so, she must kill her father, who proves more powerful than she ever imagined. With no other options, Rose must seek the Lost Library, hoping to claim its power first and use it to destroy her father's forces. Hiding beneath the Core, Matt must come to terms with being a feeder. He's banished from the palace, unable to pass through the defensive spell. With the help of his newfound father, he must embark on a perilous journey-one that may hold the key to saving Cavernum. Meanwhile, the Holy One is narrowing his search. It's only a matter of time before he finds the Lost Library and seizes for himself the very powers of godhood.