There is something a little peculiar about Eli Tate. He appears normal on the surface, but he's spent years trying to remember what happened to him - and why he doesn't age. Then there's the way he can shift shape and take on any form he desires. He doesn't know what kind of being he really is or if there are any others like him. What he does know he's been in the same town for thirty years and he must move on before his secret is discovered.
Returning to the Big Apple, Eli takes up residence in his old apartment. An evening walk turns deadly when he's attacked by a being reeking of pure evil. He barely escapes with his life - thanks to a stranger named Rio who is just like him – able to shift shape.
Rio says he knows Eli, that he's been searching for him for many years, that they were once lovers, and the creature stalking them once held them both captives to experiment on them. Eli has no memory of such a time, but he's out of options. To remember his past, and destroy the creature pursuing them, Eli has no choice but to trust Rio, even if that trust fails him.