Drew lives in a world surrounded by tall walls and a secretive government. She isn't supposed to know about the past of her world, but she does, and it's what makes her perspective on life different than her family's. But when her own brother is plotting with the government to kill the innocent people outside of her walls, the people who weren't even allowed to come inside in the first place, she won't watch any longer. Drew, with her unique knowledge of a distant memory called America, must scale the wall to save another people from her own.