As humans and godspawn reel in the aftermath of the citadel's near fall, a new foe shatters their fragile hopes, and the mysteries of the Mesarthim are resurrected: Where did the gods come from, and why? What was done with thousands of children born in the citadel nursery? And most important of all, as forgotten doors are opened and new worlds revealed: Must heroes always slay monsters, or is it possible to save them instead?