LondonfopPercyBlakeneyisalsosecretlytheScarletPimpernelwho,inavarietyofdisguises,makesrepeateddaringtripstoFrancetosavearistocratsfromMadameGuillotine.HisunknowingwifeisalsoFrench,andshefindsthatherbrotherhasbeenarrestedbytheRepublictotryandgethertofindoutwho"thatdamnedelusivePimpernel"reallyis.