Paris is prey to an invisible terror against which the police can do nothing: a sinister organization that sows chaos and death. The intrepid journalist Philippe Guérande and his partner embark on a long crusade to put an end to the crimes of the Great Vampire and Irma Vep, his dangerous accomplice. (A ten episode movie serial.)
Story set in the Middle Ages. A page and the daughter of a baron want to marry each other against the will of her father, who wants his daughter to marry another man. A sorceress predicts the future for the couple and provides the page with a bottle of poison for the other marriage candidate, which almost falls into the wrong hands.