The final chapter in the epic Dune series.

The no-ship has recently escaped from the hands of the enemy and remains on the run. Meanwhile the enemy has started invading known space, destroying one planet at a time. The New Sisterhood plans the defense, but are faced with greedy 'allies' who seek profit instead of survival. The guild navigators are faced with great peril, as they are cut off from their spice and are starting to die off, yet their beloved oracle does nothing to save them.