When the Shulkings destroy their home, siblings Mulvo and Trinna are torn apart and sold into slavery on opposite shores. Ten years later, Mulvo escapes and begins a desperate search for the sister he never stopped believing was alive—while Trinna, freed by an ancient power, finds herself changed in ways she barely understands. As forgotten gods stir and an old darkness rises, their separate paths begin drawing them toward one another… and toward a fate that could decide the future of Genoma.