She calls her Grime, although that's not her real name. She doesn't know what her real name is. She doesn't know much about herself at all, actually.
Is she the subject of an unethical experiment, rescued and hidden in city-sized garbage dump known as the Fill for her own safety? Or was she kidnaped by those who wish to undermine the powers that be based on a false conspiracy theory? Either way, she's special, there's no doubt about that. And people are looking for her. Some want her to join them. Some want to continue experimenting on her. Some want to protect her. Some want to kill her. And she just wants to be left alone, to scrounge for treasure in the world's garbage. And occasionally eat ice cream.