The story picks up nearly 20 years after the cliffhanger of Chapterhouse: Dune .
: Duncan Idaho, Sheeana, and a group of refugees continue to flee aboard the no-ship Ithaca . They are pursued by a mysterious, nearly invincible "Great Enemy". Hunters of Dune
: Meanwhile, the Honored Matres and the Bene Gesserit attempt to merge under Murbella's leadership to prepare for the looming cosmic invasion. Critical Reception Reception of the book is highly polarized among fans: The story picks up nearly 20 years after