On Wallach IX, young Valya Harkonnen promises Mother Superior Raquella that she'll protect the Sisterhood by putting one of their own on the Imperial Throne. Thirty years later, Valya faces a threat to her long-awaited plan.

Cast: Emily Watson, Olivia Williams, Travis Fimmel, Jodhi May, Sarah-Sofie Boussnina, Chloe Lea, Chris Mason, Shalom Brune-Franklin, Mark Strong, Jade Anouka, Edward Davis, Josh Heuston, Faoileann Cunningham, Aoife Hinds, Mark Addy, Jessica Barden, Jihae, Camilla Beeput