She lives with no name.

She has never left her room.

All she has ever known is pain and abuse.

Until now.

Today, she will breathe fresh air for the first time, feel sunshine against her skin and even witness human kindness.

But she has a point to make - a bleak, violent point - and when she meets her neighbour, Serenity, she finds the perfect pupil.

Forced to endure a lesson distilled from a nightmarish existence, Serenity must face unflinching evil, witness the unspeakable, and question her most deeply-held views, until at last she has no choice but to fight for her family's survival.