Rhiannon Oset, descendent of Rhiannon the Birds, daughter of King Heveydd, was given to a human king in exchange for that monarch protecting the fairies secret from invaders from the old world. Rhiannon, escaping from exile and a venal fiance, finds her father mad, her kingdom threatened and must fight a war against rebel barons and the invaders to keep her kingdom safe. She has suffered a terrible curse and must face her challenges naked. She reunites with childhood friends, must reckon whom she can trust and fight against the man she thought she loved.