For centuries beyond counting, humanity has served the Others, god-like Eternals who rule from their cloud-capped mountain-city, building a civilization of unimagined beauty and unchecked viciousness. But all that is about to change. Bas Alyates, grizzled general of a thousand battles, has assembled a vast army with which to contend with the might of Those Above. Eudokia, Machiavellian matriarch and the power behind the Empty Throne, travels to the Roost, nominally to play peacemaker - but in fact to inspire the human population toward revolt. Deep in the dark byways of the mountain's lower tiers, the urchin Pyre leads a band of fanatical revolutionaries in acts of terrorism against their inhuman oppressors. Against them, Calla, handmaiden of the Eternals' king, fights desperately to.