The Towers are in disarray, without a governing body or any defense against the dangers lurking in the clouds, and daily life is full of terror and strife. Nat Densira, the wing-brother to Kirit (Skyshouter, Spirebreaker, no-longer-of-Densira) sets out to be a hero in his own way―sitting on the new Council to cast votes protecting Tower-born, and exploring lower tiers to find more materials to repair the struggling City. But what he finds down-tier is more secrets―and now Nat will have to decide who to trust, and how to trust himself without losing those he holds most dear, before a dangerous myth raises a surprisingly realistic threat to the crippled City, in Cloudbound.