The Scarlet Star moves inexorably in the sky. Approaching Pern, she unleashes deadly Threads onto the surface of the planet. Only the Winged Ones are able to protect from them - an amazing union of man and dragon, which can only be broken by death. But now everyone has forgotten about the danger, and few even believe that the Threads once existed. It was at this time that Lessa became the leaders of the Winged Weyr and F'lar. They have to save an almost defenseless planet, because there are so few Winged Ones left...