Planet Dune has been destroyed only pockets of resistance remain with the opposition mainly from the Bene Gesserit co-ordinated from their still undiscovered home world Chapter House There is a new Scattering being planned and they still hold one asset which has not fallen into enemy hands they have sandworms, offspring of one giant worm that was rescued from Dune before the end, and in the specially prepared desert they work to turn it into a wasteland