An unsettling energy has settled over the city of Johnstown. When the darkling's behavior suddenly changes and immortal families start disappearing from their homes-Cassie and Damien are called to a meeting with The Council of the Kyrios, to discuss how they intend to bring an end to Melantha and her darkling brood. The time comes for Cassie to make her appearance known, rising to the role of queen of the immortals at Damien's side.

Cassie battles with the inner turmoil left in the wake of Marcus' torment and Cole's betrayal. When she uncovers the truth, she's left questioning everything, and the dark secret she's guarded her entire life threatens to be revealed.

Damien works to expand the warriors of The Order to face the looming threat of the countless darklings building in the shadows while searching for a means of saving Cassie from the fate Selene warned them of. Instead of finding answers, he stumbles upon a terrible prophecy.

Foe becomes friend, friend becomes foe, and Cassie and Damien are left to pick up the pieces of their shattered reality.