Superstition and fear take over the team shooting the film, ?The mystery of the Vampiress?, in Zaragoza. Strange events lead them to believe that the curse described in the film has crossed through the barriers of fiction and become part of reality. The film seems to be jinxed, as everything seems to go wrong: the props disappear, the extras often make mistakes, the lighting and sound fails?. and one of the extras is found dead in the palace walls. A plot thought up by Hormero, with the help of Violeta who plays the vampiress, discover who is behind all of this: ?M?, their old enemy, who is following them to get their master key that opens and closes every door. Fortunately, ?M? is caught thanks to their secret plans, but some loose end remain????.
