There is no sun. There is no moon. There is only gray—the smog belched from coal-fueled factories. The Workers silently shuffle to their assigned posts. The Outcasts watch from the alley walls. On every corner, a Watcher stands stone-faced, a rifle in hand. This is the only life that exists. Beyond the mountains is a dream. But dreams are foolish in a place like this.

Hannah has spent nineteen years dodging Watchers and doing as she is told.

Do not look Watchers in the eye. Don't give them a reason to notice you.

But when she wakes to the valley exploding in revolution, Hannah is forced onto a dangerous path, where nothing is what she believed. Suddenly freedom is in her grasp, and the way there requires working with the men she fears most.