Be’naj, Thaelios, Dyphina, and Saffron finally reach the buried city of Tarmuth, and enter the Hall of Doors.  In order to avoid being trapped like the Cult of Broken Names before them, they must learn how to activate the magic portals with the Hall and escape to another Plane.  Hoping to honor the legacy of their fallen mentor, they continue searching the cosmos for a way to stop the Name of the Beast from bringing about the doom of civilization.