It was supposed to be temporary. A short-term solution, that's what they called the Wall all those years ago when they were putting it up. It was supposed to be around for a maximum of five years, just long enough to calm people down and diffuse the volatile situation left in the wake of the Wrobel's victory. Only, it never quite came down. 49 years later, Cassie is too busy worrying about everyday problems to pay much attention to the problems that don't affect her. She has a lot to deal with--among her problems lay maintaining a secret romance, keeping her band of mismatched friends safe and happy, and pioneering a role as the first Evo therapist. So it's understandable that she has her hands too full to pay much mind to the going-ons of her city--even if what's happening are huge protests and violent riots protesting the rapidly-approaching 50th anniversary of the Wall's existence. Unfortunately for Cassie, it's not a problem she will be able to avoid. During discrete rendezvous with Zak, the Non-Evo boy Cassie has secretly fallen for, they start putting together snippets of information--and an ugly glimpse of the future is forming quickly. With high stakes, limited time, and only bits of information, will the group of patch-worked friends be able to save both sides of the city, or will everything crumble around them?