Irma is now a devoted collaborator of Venomous, who is set on getting rid of Philippe and Mazamette. He learns that Philippe is engaged to Jane Bremontier (Louise Lagrange), and the following day Irma and Lily Flower rent an apartment above hers. Irma’s maid, a Vampire also, hears that Philippe and Jane’s engagement party will be catered for by the famous Béchamel House. Venomous cancels their catering order, and on the day of the party the Vampires appear instead. Jane’s mother (Jeanne Marie-Laurent) gives the concierges one bottle of the Vampires’ champagne as a present, and just as dinner is served the male concierge, Leon Charlet, drinks it, is poisoned and dies. His wife stops the party guests from drinking their champagne just in time, and the Vampires make a hasty escape. A few days later, Mazamette and Philippe’s mother pick up Jane and her mother in the night in order to take them to a safe retreat near Fontainebleau. Irma, who tries to fill the getaway car with soporific gas, is spotted by Mazamette, but Irma gasses him, and he is taken away asleep while Irma hides in a box on the car. Mazamette is dumped on the street and taken to the police station, believed to be drunk. When he wakens, he calls Philippe to warn him, but Irma slips out of the box and gets away in the car before Philippe can catch her. Irma jumps off the car near the Pyramid Hotel, and calls Venomous to meet her there, but Philippe has also arranged to meet Mazamette there. Philippe spots Irma at the Pyramid Hotel, captures her and ties her up. Philippe and Mazamette leave Irma in Mazamette’s car and attempt to ambush Venomous, but Irma honks the car horn to warn him. Venomous saves Irma and drives off in Mazamette’s car, so Philippe and Mazamette chase him in his. Venomous leaps off; Philippe chases Venomous on foot, following him onto the top of a moving train, but Venomous gets away. Mazamette, enraged at the police for not letting him help Philippe on the train, hits one of the officers, who arrest him. At the police station, Philippe and Mazamette carry on so dramatically that the police decide not to book Mazamette, who is after all a famous philanthropist. But the Vampires are still on the loose.