Rhiann, an Alban priestess and princess, submits to a marriage of political necessity to Eremon, an exiled Irish prince. Out of duty grows a powerful and desperate love that will bind them together through conflict and betrayal.
As Rhiann searches for guidance in the spirit world, little realising how big a part she will play in this endgame, Eremon knows only that he must risk and sacrifice many lives, perhaps even his own.