Aurelia "Aurie" Silverthorne has high hopes for her second year in the Hundred Halls, the world's only magical university, but her expectations are destroyed when she accidentally unleashes a plague of faez-eating thralls and spends week after week getting killed in the Grand Contest.
But none of this matters when Aurie learns that the Cabal searches for a powerful magic that will help them get control of the Hundred Halls. If Aurie can't stop them, then passing her classes will be the least of her worries.
As Aurie's third year begins, students are found without their souls, ripped from their bodies, leaving them empty husks. Someone, or something, is stealing them for a nefarious purpose. With that kind of power being collected, not even the professors are safe. If Aurie and her sister cannot stop the soul thief before the end of the year, the Hundred Halls will never be the same.
While Semyon Grey, the Patron of Arcanium, slowly heals from his soul being torn, no one in the Hall can practice their craft, leaving them defenseless against the Cabal and faez madness. The Silverthorne sisters must find a way to speed up the healing, or the Hundred Halls won't survive the year. But everything they try only makes things worse, until they're left with an impossible decision that may cost the sisters their lives.