In this compelling continuation of Julie Bertagna's timely trilogy, the search for a future remains a terrifying fight for survival. Sixteen-year-old Mara and her ship of refugees are tracking the North Star in search of land in the mountains of Greenland to call home. A Gypsea boy named Tuck, orphaned when Mara's ship plows through his floating city, becomes inextricably linked to their fate. Meanwhile, back in the drowned ruins at the feet of the towering sky city, Fox begins his battle with the cruel, corrupt rulers of the New World. Forced to make their own new beginnings in a savage world, three teens must struggle to make sense of the past, overcome the harsh dangers of the present, and build a future worth living.