Travel for two young groundlings is dangerous. Hunters from the hives patrol the skies and sadistic packs roam the cities and the roads. But Jim, driven by his father's mysterious dying words to go to the Caretaker and find Florence sets out anyway, taking with him HF, his friend and companion since childhood. Their hope lies on the river, and the raft that will carry them through the long nights ahead and toward their destiny. While The...