From the 2021 film adaptation of Frank Herbert's, Dune.

In the distant future, Duke Leto Atreides, ruler of the planet Caladan, is assigned by the Padishah Emperor Shaddam IV to replace Baron Vladimir Harkonnen as the fiefholder of Arrakis, a harsh desert planet and sole source of "spice", a valuable psychotropic drug that imparts heightened vitality and awareness. Spice is key to interstellar travel, giving Spacing Guild Navigators the ability to guide starships to traverse space instantaneously and safely. Shaddam plots for House Harkonnen to retake Arrakis, secretly aided by his Sardaukar troops, to destroy House Atreides. Leto is suspicious of the Emperor but weighs the risks against the power of controlling Arrakis and making an alliance with its mysterious natives, the Fremen.

The Emperor, suspicious of House Atreides' power, conspires with House Harkonnen to invade Arrakis with the legendary elite soldiers, the Sardaukar. An attempt to assassinate Paul with a hunter-seeker fails. Yueh betrays the Atreides and disables Arrakeen's shields, allowing the Harkonnens and Sardaukar to invade. He incapacitates Leto, planning to exchange him for his wife, who is the Baron's prisoner. Yueh replaces one of Leto's teeth with a poison gas capsule with which the Duke can assassinate the Baron. Leto releases the gas, killing himself and the Baron's Mentat, Piter De Vries, but the Baron survives. Though the Baron has arranged to have Paul and Jessica dropped deep in the desert to die, a compassionate Yueh has left them with stillsuits and other survival supplies. Jessica uses a Bene Gesserit technique called "the Voice" to overpower and kill their captors. Paul and Jessica overnight in the desert where Paul, surrounded by spice, has visions of a bloody "holy war" fought across the universe in his name.