Riding his bike home from the library, Sean Sharpe finds out that the world isn't quite as average as he'd originally thought. After narrowly surviving an attack by a mysterious assailant, he is approached by another stranger—one who claims to be a Hunter. He tells Sean that his attacker was one of the Nephilim; half human spawn of fallen angels who have taken the form of creatures of the night.
Even worse, the Hunters believe that the Nephilim will want revenge for killing one of their own.
Sean is faced with a bitter reality; the world may not be average, but he is. There is nothing special about him. If he is going to survive, he will have to learn to be more than average.
But will it be enough?