When a girl in a homemade hot air balloon falls out of the sky in rural Gilbertine, there are questions: Who is this girl, where exactly did she come from, why won't she talk, and what has she risked to live in a country that does not seem to want her? And what can Sophie, Wyatt, and K--three misfit best friends with complex and harrowing stories of their own--do to help the girl who can't trust those who want to help her? What should...