All the Weyrs of Pern

The rediscovery of AIVAS stunned the whole planet of PERN - it's announcement that it could eliminate thread for good would change the world forever. PERN has been turned upside down by the knowledge that AIVAS has shared, revolutionising medicine, music and technology. Against the backdrop of deep suspicion of this new source of wisdom, every dragon and rider will be called upon to enact it's audacious plan to defeat the thread of thread for all time.