Frits and Freddy Frateur make their living as Bible salesmen, but suffer difficulties due to the economic crisis. When ringing the doorbell of Carlo Mus, who is under surveillance by the secret service for fraud, both men are laughed at while closing the door. This is one step too far for the Frateur brothers. Violently, they invade the luxurious villa. They hurt the rude man but flee when the alarm sounds. Being no trouble for Mus to locate the Frateur brother, he finds revenge. But Frits and Freddy now feel humiliated and seek revenge once more. Once again they break in, but now they kidnap the wife of the household: Gina.