'Blue Mountain, lair of the Bird Spirits.' With these words Cutter and Skywise imagine their quest to find other elfin allies may be close to completion. The companions have no idea their hopes will be upended. For imperious Lord Voll rules Blue Mountain and the hawk-riding elves who dwell within, and he wishes no intrusion upon his Gliders' isolated way of life. Yet even Voll's resistance pales before the hostility of the true power in Blue Mountain treacherous, seductive Winnowill. Shape-shifter, pain-giver, she will stop at nothing to prevent the Wolfriders from threatening her invisible hold on the Gliders.