Cailean MacLeod, an immortal who swore never to love again, finds himself in the middle of a battle to protect humanity from a powerful, mythical race of fae. When the famous author, Tessa Anderson, comes to stay at his castle in an attempt to get away from a painful past, he soon realizes that he must also protect her from himself. Battling against temptation, he repeatedly pushes Tessa away, only to realize that he was never the one in control to begin with. Now he must fight to save the woman who stole his heart, while protecting the human race from the fae who wish to control them.