For high schooler Aaron Corbett, turning 18 means becoming not just a man but a nephilim, too — half human, half angel, with supernatural abilities.

A guy who danced with what could be the girl of his dreams at a costume ball only has one hint at her identity: the Zune she left behind as she rushed home in order to make her curfew. And with a once-in-a-lifetime opportunity in front of him, he sets out to find his masked beauty.