Pierre Adet is a young revolutionary with a death sentence passed on him, whose father is hanged for his son's crime. Seeking the revenge against the Duc de Kernogan, Adet flees to England, becomes Martin-Roget and pursues Duc's daughter Yvonne, who is also a matter of interest of Lord Anthony Dewhurst. Lord Tony must seek the help of The Scarlet Pimpernel to save his loved one.

Baroness Emmuska Orczy (1865-1947) was a Hungarian-born British novelist and playwright. She is best known for her series of novels featuring the Scarlet Pimpernel, the alter ego of Sir Percy Blakeney, a wealthy English fop who transforms into a formidable swordsman and a quick-thinking escape artist, establishing the "hero with a secret identity" into popular culture.