The walls of Ninurta keep its citizens safe. Kai always believed the only danger to the city came from within. Now, with a rebel force threatening the fragile government, the walls have become more of a prison than ever. To make matters worse, as Avan explores his new identity as an Infinite, Kai struggles to remind him what it means to be human. And she fears her brother, Reev, is involved with the rebels. With the two people she cares about most...