In the wake of the Harbinger War, life on Earth has been quiet for Ethan and Sophie. While Ethan struggles to return to the life he nearly lost to the mysterious foreign sentience, Sophie worries her ever-increasing visions are a sign something equally sinister has her in its thrall. Ripped from Earth to protect the Vestrion from an old enemy on a new path of destruction, Sophie discovers the truth from an unexpected ally waiting in the last place she ever thought to look. But even after the truth comes out, Ethan begins to feel that something is still being hidden from him. Determined to find out what, he realizes too late that the power of the Harbinger is nothing compared to the might of the Divinity. The Sophie trilogy reaches its triumphant conclusion, answering the mysteries around the power of the Harbinger and the Divinity in a clash between entropy and life—domination and free will—all in the mind of one girl.