After his father's untimely death, young Leto ascends to Duke of House Atreides while Duncan Idaho starts down the path to become one of Leto's right-hand men. Meanwhile, Baron Harkonnen wastes no time moving against the new Duke by stoking the centuries-long feud between the Harkonnens and Atreides. A new dawn rises when Crown Prince Shaddam successfully ousts his father from the throne of the Imperium.