"Paris, 1885. Aubry Tourvel, a spoiled and stubborn nine-year-old girl, comes across a wooden puzzle ball on her walk home from school. She tosses it over the fence, only to find it in her backpack that evening. Days later, at the family dinner table, she starts to bleed to death. When medical treatment only makes her worse, she flees to the outskirts of the city, where she realizes that it is this very act of movement that keeps her alive. So begins her lifelong journey on the run from her condition, which won't allow her to stay anywhere for longer than a few days nor return to a place where she's already been"--