Dune

Paul Atreides is tested by the Bene Gesserit Reverend Mother Gaius Helen Mohiam with the gom jabbar, the lethal proof of humanity. House Atreides departs Caladan for Arrakis. Paul begins experiencing prescient dreams. The political trap becomes visible — the Emperor and Harkonnens have conspired against the Atreides.

The Atreides settle into governance on Arrakis. Paul and Jessica explore the city of Arrakeen. Duncan Idaho scouts Fremen alliances. Liet-Kynes, the Imperial ecologist, reveals that the Fremen have a secret centuries-long terraforming project. Yueh's treachery is set in motion. The Harkonnen-Imperial attack destroys House Atreides.

Paul and Jessica are captured by Fremen led by Stilgar and Jamis. Jessica uses the Voice to control the situation. Paul kills Jamis in ritual combat — his first kill. He is accepted into the sietch. Paul receives his Fremen name: Muad'Dib. He begins to understand the Bene Gesserit legend planted among the Fremen and the trap it may represent.

Paul and Jessica integrate into Fremen sietch society. Paul falls in love with Chani. Jessica undergoes the Water of Life transformation to become the sietch's Reverend Mother, inheriting all the Other Memory of the previous Reverend Mother — including the full weight of ancestral female consciousness. Paul's prescient abilities intensify. The timeskip begins.

Book Two shifts perspective to the Harkonnen and Imperial sides. Baron Vladimir Harkonnen consolidates control of Arrakis. His nephew Feyd-Rautha is being groomed as potential Emperor. The Baron's political maneuvering is rendered in full, including his manipulation of Count Fenring, his appetite for young men, and his growing unease about rumors of a Fremen leader in the desert.

Paul drinks the Water of Life and undergoes the transformation that opens full prescience. He sees all possible futures simultaneously. He understands the jihad waiting for him and cannot find a path that avoids it. He and Jessica discuss what he has become. Alia, already fully conscious, is recognized as Abomination by the Bene Gesserit framework.

The Emperor Shaddam IV arrives at Arrakis with Sardaukar legions and the combined might of the Landsraad, intending to crush the Fremen insurgency. Feyd-Rautha accompanies as the Harkonnen heir. Paul's Fremen army has grown to tens of thousands. Paul threatens to destroy all spice production — ending interstellar civilization — as leverage.

The great desert storm covers Paul's attack on the assembled Imperial and Harkonnen forces. Paul kills Feyd-Rautha in single combat. The Emperor surrenders. Paul forces Irulan into political marriage. He acknowledges the jihad he cannot stop. Chani weeps, the first Fremen tears of grief rather than ceremony. Paul has won everything — and knows the cost.