In the 1984 film "Dune," based on the novel of the same name by Frank Herbert, the story is set in a distant future where the most valuable substance in the universe is "space cocaine," a powerful and highly addictive drug. The Atreides family, led by the Duke, are the kingpins of the space cocaine trade, controlling the production and distribution of the drug on the desert planet Arrakis.

However, their reign as drug lords is threatened when a rival noble family betrays and kills the Duke, forcing his son Paul Atreides to flee into the harsh desert wilderness. As Paul becomes more involved with the native rebels fighting against the tyrannical empire that controls the supply of space cocaine, he discovers that he has innate abilities that make him a powerful leader and a potential savior for the oppressed people of Arrakis.

Despite the dangers of space cocaine, the Atreides family and the empire are willing to do anything to maintain their control of the drug trade and their power and wealth. As Paul grows in power and influence, he must confront the many enemies that threaten his life and the future of the planet, including the scheming noble families, the ruthless empire, and the terrifying sandworms that roam the desert.

Ultimately, Paul must embrace his destiny and lead the rebels in a final, epic battle to free Arrakis from the clutches of the oppressive empire and take control of the valuable space cocaine trade. The film explores the themes of addiction, power, and corruption, and shows the destructive consequences of a society built around the pursuit of a highly addictive drug.