Violence, Frightening Content
The story follows Penryn Young, who has been thrust into the role of protecting her wheelchair-bound younger sister, Paige, and their schizophrenic mother. She has to move them from abandoned building to abandoned building, staying one step ahead of the street gangs in Silicon Valley, while also keeping them safe from whatever makes the gangs stay inside at night.
One day, while moving from one hopefully safe house to another, they stumble upon a group of angels attacking one of their own, cutting off his wings. In an attempt to create a diversion, Penryn enters the fray, tossing the wingless warrior his sword. He is able to fight off his attackers, but one of them kidnaps Penryn's sister as he flies away.
Penryn nurses the angel back to health so that she can use him to find her sister. The rest of the story follows the two as they make their way to the angels base in San Francisco. Along the way they encounter street gangs, armed human resistance fighters, and something more frightening than warriors of either species.