In the far future of humanity, Duke Leto Atreides accepts stewardship of the dangerous desert planet Arrakis, also known as Dune, the only source of the most valuable substance in the universe, "the spice", a drug which extends human life, provides super-human levels of thought, and makes faster-than-light travel practical. Though Leto knows the opportunity is an intricate trap set by his enemies, he takes his Bene Gesserit concubine Lady Jessica, young son and heir Paul, and most trusted advisers to Arrakis. Leto takes control of the spice mining operation, which is made perilous by the presence of giant sandworms. A bitter betrayal leads Paul and Jessica to the Fremen, natives of Arrakis who live in the deep desert.