Messager: Monsieur Beaucaire, Prologue: No. 2, Chanson de la rose rouge, "Au jardin où les fleurs sont écloses" (Beaucaire)-Yvon Leenart/Orch De L'Association Des Concerts Lamoureux/Michel Dens

Act I：he setting is Bath in the early 18th Century. Beaucaire is posing as a barber employed by the French Ambassador. He is actually the Duc d'Orleans, the son of the King of France, a fact only known to his valet and his friend, Molyneux. Beaucaire is in love with Lady Mary Carlisle, who is herself courted by the Duke of Winterset. Beaucaire hosts a card game, where a number of gentlemen lose most of their money to him. In the second round, Beaucaire plays Winterset for high stakes. At the climax of the hand, Beaucaire exposes Winterset as a cheat. Winterset threatens to kill his opponent, but Beaucaire reveals that they are observed by his servants and the noble Molyneux. As the price of Beaucaire's silence, Winterset takes him to Lady Rellerton's ball to introduce him to Lady Mary.Molyneux is in love with Lady Mary's cousin Lucy and courts her at the ball. Beaucaire charms the company, and Lady Mary asks to be left alone with him. He begs the rose in her hair. She says that he must earn it by escorting the aged Countess of Greenbury to supper. To obtain revenge, Winterset persuades Captain Badger, a famous swordsman, to quarrel with Beaucaire, who challenges him to a duel. They fight on the terrace and, to everyone's surprise, Beaucaire is the victor. He takes the old Countess into supper and receives his rose from Lady Mary.