Not far from the Eiffel Tower was, in the 17th century, a small island called madam island, a word that comes from the words Mal Querelle, bad quarrel. This is where the aces of the sword met, also known as "refined of honor" who studied the infallible boots together. Among the regulars: the Chevalier d'Andrieux who, at 30, had already killed 72 people in a duel. And De Montmorency Bouteville, who, at 24, had already had 19 duels. Sworn enemies, whose duel lasted more than 19 years!