The year is 2086. Climate collapse, famine and war have left the world in ruins. In the shadow of the Alpha-Omega regime - descendants of the super-rich architects of disaster - sixteen-year-old Boo Ashworth and her uncle risk everything to save what's left of human knowledge, hiding the last surviving books in a secret library beneath the streets of Hobart. But Boo has a secret of her own: an astonishing ability to memorise entire texts with perfect recall. When the library is discovered and destroyed, she's forced to flee - armed with nothing but the stories she carries in her mind, and a growing understanding of her family's true past. Hunted and alone, and with the help of some unlikely allies, she must fight to save her loved ones - and bring hope to a broken world.