The peasant Brigitta is attacked by a vampire, but her employer, Professor, and the local doctor believe it is superstition from the locals and she died of anemia. In the Professor's mansion, a troupe of female dancers are training a play. When the young Luca returns, he meets his girlfriend Francesca dancing and proposes the group to go to a picnic on the next day. They go to a waterfall and Luca asks Francesca in marriage. She calls her best friend Luisa, who is the fiancee of Giorgio, to tell the news. However, the weather changes and Luca seek them out in the woods while Giorgio returns to the mansion with the other dancers. When the rain starts, they seek protection and stumble upon a nearby derelict castle. However, they are invited to stay by a mysterious Countess Alda that explains that she lives there, and her servant Herman brings tea for the guests. When Countess Alda needs to pull out of the room, Luisa leaves Luca and Francesca to snoop around and is attacked by an old vampire. Then the trio leaves the castle and returns to the mansion and soon Francesca notes that Luisa changed her behavior, but nobody pays attention on her.
—Claudio Carvalho, Rio de Janeiro, Brazil