The allied factions of humanity, along with the waning Ildiran Empire and the powerful water elementals and sentient trees, have defeated the near-invincible alien race of the hydrogues, driving them back into the depths of gas-giant planets. But before peace can heal the wounds between the races, two ancient enemies return: the capricious fiery elementals, the faeros, who mean to burn all those who fought alongside their mortal enemies. And the lost hive race of the Klikiss, who intend to recla