Sacrifice: The First Book of the Fey
by Rusch, Kristine Kathryn
In control of over half of the world, the Fey seek to invade the Blue Isle, where young Prince Nicholas leads his people in the cause of freedom. Defying their Black King in order to rally an attack on the peaceful Blue Isle, warrior-prince Rugar and his fearless daughter, Jewel, do not suspect that the islanders, under young prince Nicholas, have prepared to defend themselves.