Sophie was found floating in a cello case after a shipwreck, and everyone insists her mother drowned. But Sophie refuses to believe it. When the authorities try to separate her from her guardian, she sets off on a daring adventure to Paris, guided by a single clue: the address of a cello maker. There, she meets Matteo and his band of rooftop-dwelling orphans, and together they chase leads across the city’s skyline. Can Sophie find her mother before time runs out?
