An ancient myth looms over a new friendship. The City is the only home that Ellie has ever known. She's always been told that there is nothing to see beyond the shores of her small, salty island. That is, until a mysterious boy washes in with the tide, trapped inside the belly of a whale. The citizens of the City believe he's ruled by the Enemy--the legendary god who drowned the whole world--come again to cause untold chaos. Only Ellie believes that the boy is innocent. To save him, Ellie must prove that he's not who they think he is--even if that means revealing her own dangerous secret.