Wagner the werewolf represents the compiled exploits of one Fernand Wagner, a bitter old man visited on a stormy night by the legendary Dr. Faust. As in Faust's own tale, Wagner is made a tempting offer - renewed youth, intelligence and unlimited wealth. All he has to do is agree to accompany him for a time ... and to become a werewolf. When Wagner agrees, his youth is restored at a horrible price. on the last day of each month he becomes a mindless beast, part animal and part man. after realizing the error of his decision he begins a quest to find a cure. But Satan has a solution of his own for Wagner's condition ...