David Hart shouldn’t be alive now. He can’t feel pain. He has scars for wounds he’s never felt. Kids who have the kind of rare condition he has don’t usually survive childhood, but at seventeen, David’s beaten the odds. So far, at least. For his whole life he’s been protected and monitored, living by a careful set of rules. And then there’s Luna, the nurse trainee who’s been hired to keep an eye on him. David wants more than anything to live life on his own terms. But now the things he wants to live for have a lot to do with Luna.