A young man is a servant in the court of a great king of Dalmatia.He was bought when he was still a child ,but he is a high-born gentleman.The king's daughter is in love with him.During a banquet, a barbarian king's son behaves like a boor.There will be a duel;if this crude man wins,he will marry the princess of Dalmatia;if he loses ,all the towns conquered by the Barbarians will be given back to her royal father.