One of the author's early Dragonrider adventures, set on the planet Pern, where deadly "thread" falls from the sky and puts all living creatures at risk. The symbiotic relationship of dragon and rider is the planet's only hope for survival. Dragonquest tells the story of F'nor, the brother of F'lar and the rider of the brown dragon Canth. A few ambitious Lords, aware of the dragons' ability to teleport, want to send someone to the Red Star, the source of the deadly thread that periodically falls on the planet. They plan to destroy the thread before it reaches Pern. F'nor and Canth are willing, but the dragon needs a detailed image of a place in order to get there. Also, there's the question of whether they will survive such a trip through space