Here’s an informative breakdown regarding — focusing on what this refers to, the file format, and content expectations. 1. What Is “Dune: Prophecy”? Dune: Prophecy (originally titled Dune: The Sisterhood ) is an upcoming HBO Max sci-fi drama series set in the Dune universe created by Frank Herbert. It takes place 10,000 years before the rise of Paul Atreides and follows the founding of the Bene Gesserit order.