Grade 5-9–The young sky-pirate Captain Twig has been sent on a quest by his father Cloud Wolf. To save his world, he must sever the Anchor Chain of the floating city Sanctaphrax–home to academics and alchemists–before the Mother Storm arrives to reseed Riverrise with her rain. Unfortunately, Twig's memory of his father's instructions is gone, and his crew is scattered. Accompanied by Cowlquape, a Sanctaphrax apprentice, he scours the lands below for his crew and clues to the memories he has lost. Midnight is peopled with complex characters like woodelves, who can read minds; and wigwigs, fuzzy, Tribblelike creatures that happen to be carnivorous.