Set in the distant future, the film chronicles the conflict between rival noble families as they battle for control of the extremely harsh desert planet Arrakis, also known as "Dune". The planet is the only source of the drug melange—also called "the spice"—which allows prescience and is vital to space travel, making it the most essential and valuable commodity in the universe. Paul Atreides is the scion and heir of a powerful noble family, whose inheritance of control over Arrakis brings them into conflict with its former overlords, House Harkonnen. Paul is also a candidate for the Kwisatz Haderach, a messianic figure in the Bene Gesserit religion. Besides MacLachlan, the film features a large ensemble cast of supporting actors, including Patrick Stewart, Brad Dourif, Dean Stockwell, Virginia Madsen, José Ferrer, Sting, Linda Hunt, and Max von Sydow, among others.