The episode begins with Sally, a handmaiden, receiving her mission as her mistress Zoe prepares to enter the Marquess's estate for marriage. Sally is instructed to help Zoe win the heart of George, the new and illegitimate Marquess, while also guarding against the schemes of Lady Mary, the status-obsessed princess who runs the household and despises George. As the auspicious hour arrives, Zoe enters the bridal sedan, leaving Sally alone to navigate the treacherous, trap-filled mansion. Sally resolves to act as both Zoe's shield and spear in the impending conflict.