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.

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.

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

Apprenticed to the Most High Academe of Sanctaphrax, a floating city of scholars, gossip, and treachery, 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.

Quint finally begins his training at the Knights Academy, Maris adjusts to life in Undertown, and Sanctaphrax shivers in anticipation of a legendary storm, while a storm of a different kind brews between sky-scholars and earth-scholars.

An unbonded knight traveling as a "free lance" meets more than his share of trouble when he signs on with Lord Big Nose to recover a crown from the Lake of Skulls.

When heavy rains arrive, Rabbit, a day creature, gets his wish to spend more time with his friend Hedgehog, who usually sleeps during the day.

When Sir Knight saves a damsel in distress, she is forced to return the favor.

Nate Quarter, a lowly lamplighter in the phraxmines of the Eastern Woods, must flee for his life when the mine sargeant wants him killed, while elsewhere, a storm unlike any ever seen is building.