They call them Volunts: nature's scavengers, shapeshifters that eat metal and stone. To the government, they are specimens. To Shoren, a lonely 20-year-old, the Volunt named Isaac is the first thing that has ever made him feel alive.
Hidden away from a society that wants him dead, Isaac learns what it means to be human. But outside their walls, a nightmare is unfolding. Brian Gurth, the director of the BSU, is conspiring with the shadow corporation Genius Co. to blur the line between biology and machine.

When the hunt comes to Shoren’s door, the line between man and monster disappears. In a world of doppelgangers, secret torture, and artificial souls, love is the most dangerous disadvantage of all.