This novel is set in Germany and tells the story of the Count of Nideck, his daughter Odile, and Gaston who is a doctor. The Count is severely ill and his illness is linked to the Black plague (a she-wolf). Gaston is employed to heal the Count, but he falls in love with Odile, the Countess. He asks to raise the spell which overhangs the Castle, and restore her father's health,—as the price of it, he asks for her love. Find out in this novel if Gaston finally raises the curse.