The chapter opens with an excerpt from Princess Irulan describing Fremen religious adaptation and the later cultural awakening of Arrakis. The narrative then shifts to Liet-Kynes, badly wounded, stripped of water and stillsuit, and crawling alone across the desert under the noon sun.

Kynes identifies himself as the Imperial Planetologist and steward of Arrakis, but he is near delirium. He understands that the Harkonnens abandoned him to die by exposure or worm, yet his ecological training remains dominant: he smells a pre-spice mass beneath the sand and recognizes that its gases are approaching explosive pressure.

As Kynes weakens, he hears the voice of his dead father, the former planetologist, lecturing him on ecology, planetary transformation, human populations, religion, law, and the long plan to make Arrakis support grasslands, forests, and open water. Kynes knows the voice is a hallucination, but the lectures force him to reflect on the ecological and political consequences of the Fremen dream.

Carrion hawks gather around Kynes, and he hopes their circling will draw nearby Fremen to investigate. He remembers that he has already sent orders to the sietch villages: if Duke Leto's son is alive, the Fremen are to find and protect Paul, though they may reject Jessica.

His father's voice warns that no worse disaster could befall Kynes's people than to fall into the hands of a hero. Before any rescue can come, the hawks flee and Kynes hears the unmistakable rumble of a pre-spice blow. The expanding underground bubble breaks through the sand, engulfs Kynes, and kills him; in his final awareness, he concludes that accident and error are among the universe's most persistent principles.