Carola Lorm, a celebrated revue star from South America, is not thrilled that her daughter Barbara wants to marry a young man from Hamburg. The weather there is just as cool as the father-in-law in spe, who proves to be a highly wet Hanseatic fruit merchant. When Carola follows the burned-out couple to Germany, she is also involved in a intrigue of drug smugglers. But with the help of a fallen commissioner, she can put the villains down the craft and trickfully change the sniper father-in-law.