Paul Stewart

Nine-year-old Fergus Crane's life is filled with classes on the school ship Betty Jeanne, interesting neighbors, and helping with his mother's work until a mysterious box flies into his window and leads him toward adventure.

Rook Barkwater, the young librarian knight, attempts to stop Vox Verlix, the Most High Academe, in his plot to take over Edgeworld once again.

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.

In his continuing adventures, Twig, now sixteen years old, joins the crew of his father's sky pirate ship and embarks on a dangerous mission to collect the powerful stromphrax, a substance that purifies water and also prevents the city of Sanctaphrax from floating away.