On distant Luna, buildings rise seven miles high; there the Sovereign Consul, Octavia au Lune, rules with her Imperators and Praetors. The Ash Lord, who made the world of Rhea cinders, is her minion. She controls the twelve Olympic Knights, legions of Peerless Scarred, and Obsidians as innumerable as the stars. And those Obsidians are only the elite.