It is a time of wars and revolutions, conflict and intrigue. New Crobuzon is being ripped apart from without and within. War with the shadowy city-state of Tesh and rioting on the streets at home are pushing the teeming city to the brink. A mysterious masked figure spurs strange rebellion, while treachery and violence incubate in unexpected places. In desperation, a small group of renegades escapes from the city and crosses strange and alien continents in the search for a lost hope. In the blood and violence of New Crobuzons most dangerous hour, there are whispers. It is the time of the iron council.