The Corrosion, a plague of unparalleled proportions, has already ravaged the Astryan continent. On the other side of the world, the continent of Avaris and its nomadic peoples—so far spared from the horrors spawned by this abomination—now stand on the brink of extinction. Eline, an itinerant Soul Whisperer, relentlessly battles the force that turns the once-thriving fauna, flora and humans of this lush land into grotesque abominations. Following a mysterious encounter, a dark power awakens within her, one that may hold the key to ending this apocalypse: the ability to control the Corrosion within her own body.