In a world where the familiar has sinister undertones, two friends are torn apart just when they need one another most.
Marivic Stone lives in Darby, a small town famous for a medical discovery that saved humankind. Now everyone must undergo a secret procedure called the winnowing, an inevitable — and dangerous — rite of adolescence.
No one who has experienced the winnowing remembers anything about it, but Marivic and her best friend Saren, are determined to learn the truth. What they uncover could change the world forever — if they survive.