In an alternate timeline where Paul Atreides was never born, Lady Jessica obeys the Bene Gesserit and bears a daughter named Ariste instead of a son. Her loyalty earns her training as a Truthsayer, and she uncovers the betrayal of Dr. Wellington Yueh before it can unfold. House Atreides survives under Duke Leto's leadership but becomes locked in a prolonged War of Assassins against House Harkonnen on the desert planet Arrakis. Meanwhile, the Fremen have vanished following a brutal purge by the Emperor's Sardaukar forces. Into this fractured world, a lone agent working undercover for the Bene Gesserit arrives on Arrakis with a singular mission: find the missing Fremen and awaken the Sleeper. The desert holds its secrets tightly, and the political machinations of the Great Houses threaten anyone caught between them.