For the teens at The Haven, the outside world, just beyond the towering stone wall that surrounds the premises, is a dangerous unknown. It has always been this way, ever since the hospital was established in the year 2020. But The Haven is more than just a hospital; it is their home. It is all they know. Everything is strictly monitored: education, exercise, food, and rest. The rules must be followed to keep the children healthy, to help control the Disease that has cast them as Terminals, the Disease that claims limbs and lungs—and memories. But Shiloh is different; she remembers everything. Gideon is different, too. He dreams of a cure, of rebellion against the status quo. What if everything they've been told is a lie? What if The Haven is not the safe place it claims to be? And what will happen if Shiloh starts asking dangerous questions?