Action The Petermann family travels to Italy on vacation for six . They don't know that a confusion has hidden secret papers in their rental car. The gangsters - the baroness, director Antonowitsch, the stupid Otto Muffler and the young Willi Boltz, who was just hired by the gangsters - persecute the Petermanns. Willi gets into a traffic accident with Petermann's car, in which his motorcycle is destroyed. Max Petermann, who had just passed his driving test, had driven backwards instead of forwards. The Petermanns take Willi, whom the daughter of the Monika family distrusts, in their midst and drive him to Italy. The other gangsters follow discreetly.