Alphonse flees to Paris to escape his wife's despotism. Intoxicated by the frenzied pace of Parisian life, he ruins himself completely. During a nightclub outing, some hoodlums mistake him for Al Gregor, the king of the underworld.

A newlywed couple travels to a small town to visit the bride's cousins—her last two surviving relatives—at the castle where they live, only to discover that the cousins have just died and the castle is now inhabited by vampires.