Thanks to the efforts of Laura and Okane, Amicae, City of Sweepers, survived the Falling Infestation which nearly destroyed it. While the ancient monsters have been beaten back for the moment, new and more monstrous dangers face them in the form of belligerent bureaucracy, dangerous gangs, and grasping Sweepers bent on personal glory …

To say nothing of Rex, the City of Kings, who breed their own kind of monstrosity.

Laura and Okane must go to Rex to reclaim the secret weaponry that keeps Amicae safe-and come face to face with a horrifying truth about the Rex and their designs on all of Orien’s cities.