The Renegades of Pern by Anne McCaffrey

On the planet Pern, where dragons and humans share an ancient bond, a new age of discovery dawns. As settlers begin to uncover the long-lost secrets of their ancestors, others reject the old order, choosing a life of freedom beyond the Weyrs and Holds. Among them is Thella, a fierce and cunning woman determined to seize power at any cost. But when her defiance threatens the delicate balance of Pern’s world, dragonriders and holdfolk alike must unite to face an even greater danger—the return of the deadly Thread from the skies.

Anne McCaffrey’s The Renegades of Pern is a sweeping, imaginative tale of rebellion, adventure, and destiny—set in one of the most beloved science-fantasy worlds ever created.