From the New York Times and international bestselling author of the Matched trilogy, Ally Condie, comes a brand new mysterious world! Can you hear Atlantia breathing? For as long as she can remember, Rio has dreamt of the sand and sky Above—of life beyond her underwater city of Atlantia. But in a single moment, all her plans for the future are thwarted when her twin sister, Bay, makes an unexpected decision, stranding Rio Below. Alone, ripped away from the last person who knew Rios true self—and the powerful siren voice she has long hidden—she has nothing left to lose. Guided by a dangerous and unlikely mentor, Rio formulates a plan that leads to increasingly treacherous questions about her mothers death, her own destiny, and the complex system constructed to govern the divide between land and sea.
