The first in the epic science fiction series of the same name, Dune is set on the desert planet Arrakis, host to "the Spice" - the most important resource in the universe, needed for interplanetary travel and coveted for its effects on longevity and granting incredible psychic powers among humans. Amidst an intergalactic power struggle, would-be heir to the planet's stewardship Paul Atreides is cast out into the desert to die following a coup. Joining a group of zealots called the Fremen, Paul soon becomes considered their messiah - Mahdi - and recognizes in them a formidable fighting force with whom he can retake control of Arrakis.