With the nine immortals desperate to lift the curse on the warrior Carden, the selkie Sayer is sent to the mortal realm to bring back a human archeologist to help. But Sayer has his own motivations for leaving Annwyn: to avoid an arranged marriage to the daughter of a harpy and a nymph. In the mortal world, he meets Rachel Simmons, curator of Celtic antiques at a local museum-just the human to help Carden. That is, until a passionate encounter at the nightclub Velvet Haven leads Sayer to suspect that Rachel is not entirely human...