In this brand-new cosmic adventure by the author of The Genesis Quest and The Jupiter Theft, Torris, son of the Facemaker, knows only his small community at the base of the great Tree on a comet with almost no gravity or atmosphere. Torris's daily struggle for survival includes harvesting frozen air to keep breathing, dodging flutterbeasts, and hunting meatbeasts for food. When it comes time to make his vision quest to the top of the Tree, Torris is completely unprepared for what he finds: first, a thieving and hostile fellow quester; then, Ning, a female hunter from a neighboring tree-bearing comet, who has catapulted across empty space in search of food to save her family; and ultimately, alien visitors in a massive starship that has spent billions of years crossing the galaxy. Shocked at the cultural differences between his home and Ning's and stunned by the changes precipitated by the arrival of the spaceship, Torris must learn quickly, adapt even faster, and face an uncertain and rapidly changing future unlike anything he has ever imagined.