The Twelfth Chamber

The last airborne citadel, Gearhold, runs on steam and leftover magic crystals. It is split into the floating Upper City and the sunless Lower City, a dumping ground of refuse. On a stormy, thunder-lashed night, a burning aristocratic airship crashes into the junkyards of the Lower City. Karen, a reclusive mechanic, stumbles upon a dying young girl named Ella.