Gr. 4-6. The second volume in the Edge Chronicles series, Stormchaser is a rousing adventure tale with a story that's more complex and satisfying than its predecessor, Beyond the Deepwoods. Sanctophrax, a city of academics that floats in the air above Undertown, threatens to break from its mooring and drift away because the corrupt Most High Academe has been selling off the rare, valuable, and strangely heavy substance called stormphrax.