"Dune" is a science-fiction novel written by Frank Herbert, first published in 1965. The story takes place in the distant future and follows the journey of a young nobleman named Paul Atreides, who becomes embroiled in a power struggle over control of the desert planet Arrakis, also known as Dune.

Arrakis is the only known source of the spice melange, a valuable substance that allows for interstellar travel and has other important properties. The noble houses of the Empire compete for control of Arrakis and its spice, leading to political intrigue, betrayal, and war.

As the story progresses, Paul becomes involved with the native people of Arrakis, the Fremen, and learns about their unique culture and their connection to the planet. He also begins to experience strange visions and develop unusual abilities, leading to the belief that he may be the long-awaited messiah figure of the Fremen.

"Dune" is a complex and intricate novel that explores themes such as politics, ecology, religion, and human potential. It has become a classic of science fiction and has spawned numerous sequels, adaptations, and spin-offs in various media.