The first "Dune" introduces Paul Atreides (Chalamet) and his noble family, House Atreides, as they travel to Arrakis, a dry, desert-like planet, where they've been tasked with harvesting a treasured commodity called spice, which is available only on Arrakis. Spice is highly valuable due to its incredible benefits, which include longevity of life and increased thoughtful awareness. It also facilitates space travel. But shortly after House Atreides arrive on the planet, they're attacked by a rival family, House Harkonnen, who lay siege to Arrakis.
"Dune" leaves off with Paul escaping the Harkonnens with his mother, Lady Jessica (Rebecca Ferguson), and after proving himself to Arrakis's native people, the Fremen, he joins them to bring peace to Arrakis. "Dune: Part Two" will follow Paul's journey and his rise to power among the Fremen tribe.