After an unlikely series of events made it possible for young Ruby to escape her life-long imprisonment underground in The Complex, she hoped that freedom would be waiting for her on Earth's surface. Instead, she discovers that even though she has slipped out of their immediate grasp, the government's control over the human population extends to places she never imagined existed.It's not enough for Ruby to fight only for her own freedom when her loved ones are still trapped underground. Unsure of whom on the surface she can trust, Ruby and Reese come up with a plan to turn the survivors on the surface into an army that can stop the government and their Hunters once and for all, but in order for that to happen, she'll have to lose Reese one more time.