Monsieur Beaucaire, a French nobleman & relative of the King, engages in a sword fight with the jealous Duke of Winterset over a card game, leading to a kidnapping attempt on the woman Beaucaire loves, Lady Mary Somerset, forcing Beaucaire to fight valiantly, get imprisoned, and then escape in disguise to stop the Duke from marrying Lady Mary, culminating in him revealing himself as the officiant during the wedding ceremony!