When you live in the sky, the only way out is down ... Larinan Mann is an outsider, a social oddity. Born in contravention of the rules of his society, into a cold and powerful family, Lari's life seems to have no purpose. But then his only friend draws him unwittingly into the murky terror of the underworld that dwells below his feet, his father unexpectedly inducts him into the inner circle of history's most terrible secret, and Lari's world - and everything he thought he knew about it - is shattered forever. Then he meets Saria, a girl with destiny looking over her shoulder, and together the two of them must walk into an unknown greater than anything humanity has ever faced ...