Gears of Revolution (Mysteries of Cove Series #2)

After finding a compass and clues left by Kallista's father, Leo Babbage, Trenton and Kallista head west aboard their homemade mechanical dragon to search for the missing inventor. The teenagers hope to find answers about their mountain city of Cove, but instead, they find only a blackened forest, ruined buildings, and a small underground city. Almost immediately, Trenton and Kallista are caught up in a civil war between a clan of scavengers called Whipjacks and the Order of the Beast, peop...