Chauvelin's scheme to capture the Princesse de Monsantes before she can escape to England succeeds and she and her servant fall into his trap. Sir Percy hears about it and hatches his own scheme, rescuing the Princesse and her servant from under Chauvelin's nose and smuggling them to England. Outraged, Chauvelin travels to England, planning to kidnap the Princesse and bring her back to France. Meanwhile, the Prince has hired a Chinese decorator to remodel a wing of the palace, and Sir Percy decides to use the man in his plan to thwart Chauvelin's plot.

Why would an American who desperately needs the Pimpernel's help challenge him in a duel to the death? Sir Percy must find a way to protect his second identity and protect the man, at the same time.

Innocent newlyweds, Antoine and Antoinette, are falsely arrested and sentenced to death. The Scarlet Pimpernel comes to the rescue with the help of Antoinette’s young sister, Elise, who worships the Pimpernel.