Three hundred years ago, Cersei, the founding queen of the Saint Laurent Empire, was assassinated on her coronation day. Her soul travels through time and inhabits the body of a disgraced fake noble girl of the same name, who commits suicide after her identity is exposed for drugging the holy knight Reinhardt. Reborn with supreme queenly tactics, Cersei takes control of the chaos, dumps Reinhardt decisively, and returns to the Lannis Duchy to fight the legitimate heiress Selena. She subdues half-elf brothers Julian and Robert with blood inhibitors and reunites with Garcia, her former vampire prince and the underground market ruler. Facing royal suppression and wars, she commands elves and vampire forces, summons dragons, and exposes all conspiracies. Overthrowing the corrupt empire regime, Cersei reclaims her throne. Finally, she rules the empire with four powerful men competing for the position of her ranked royal consorts.
