Thirteen-year-old Twig, having always looked and felt different from his woodtroll family, learns that he is adopted and travels out of his Deepwoods home to find the place where he belongs.

Twig, a young sky pirate captain, is the only one who can save the floating city of Sanctaphrax from the Mother Storm.

Apprenticed to the Most High Academe of Sanctaphrax, fourteen-year-old Quint runs increasingly dangerous errands, which eventually bring him to a place of gruesome monsters that threaten his life and those of his friends.

Fleeing from the ruins of New Undertown, Rook Barkwater and the librarian knights and Felix Lodd and his banderbear friends must lead the escaping population to a new life in the Free Glades.

Cade has never met his uncle, the infamous 'descender' Nate Quarter, who years ago committed heresy by lowering himself over the cliff-face of the Edge. But Nate has returned, and the Academy of Flight are looking for revenge against all of his supporters - including Cade. So now he has to run. With no money and nowhere else to go, Cade's only option is to stow away aboard the Xanth Filatine - a mighty sky-ship bound for the city of Hive. But getting...