1774, a few years before the French Revolution, somewhere between Potsdam and Berlin - Madame de Dumeval, the Duke of Tesis and the Duke of Wand, libertines expelled from the Puritan court of Louis XVI, sought the support of the legendary Duke of Walchen, a seducer and free thinker from Germany, alone in a country where hypocrisy and false virtue reigned. Their mission: to export libertinage to Germany, a philosophy of enlightenment based on the rejection of morality and authority but also, and above all, to find a safe place to continue their misguided games.