The scientist Prof. Dr. Franz Hergarten has to leave his playmate, the blonde Lisa, at home, because he is supposed to bring highly explosive and important documents from Germany to New York as an important secret bearer and courier of a certain organization. An ocean liner is chosen as the means of transportation. German security forces are to accompany him and shield him from unwelcome strangers. Soon Hergarten realizes that some agents of hostile powers, who are also keen on the secret papers, are on him, using every trick and weapon imaginable - including women.
Seduction has to be learned: One orders a harem to his hotel to prove that only she is the one. The other slips into boy's clothes to stand her ground. Handsome hotelier James Sander is idolized by pretty girls and earns a lot of money on the side. But the girls are a thorn in the side of his tax consultant Hilde. She has fallen in love with the attractive bachelor and has worked out a perfect plan to win James' heart. Mike's band has also arrived at his hotel. Sweet Bibi slips there into the role of her sick brother, trying to keep the secret of her womanhood and stand her ground as a drummer. Her game of hide-and-seek is in vain - because Mike is not the only one who has his eye on her. The turbulence in the hotel reaches its climax when hotel servant Pankraz smells a crime in James Bond style and stages the total confusion.
Deeply disappointed by her bridegroom, Andrea flees from Bruggern to the south and experiences a beautiful "Romance in Venice". She falls in love with the boyish-charming pianist Stefan Schröder. But a misunderstanding leads to breakage. Andrea returns pregnant to Germany. Stefan signs a contract for America. And the years go by .
One morning in August 1944, the inhabitants of a French village are celebrating their premature liberation. The festivities are interrupted by the arrival of an exhausted, leaderless German detachment. A few kilometers away, the inhabitants of the village of Muzière negotiate with the Germans and agree to a truce. But the arrival of a Wehrmacht captain, anxious to regain control of the men, puts an end to this fragile peace process. The captain suggested meeting the Americans and surrendering to regular troops rather than civilians. The inhabitants of Muzière, believing the truce to be broken, fire on the Germans and, on this misunderstanding, the guns start talking again.
Both Scotland Yard and an amateur American sleuth are tracking a master criminal known as The Frog. This moniker refers to the bulging-eyed mask worn by the evildoer, and is reflected by the frog icons painfully tatooed onto the forearms of his henchmen. The trail leads to the country manor of an enigmatic, steely-eyed nabob, whose repressed son has eyes for the artistes at the Lolita cabaret, and whose lovely daughter captures the fancy of both the American playboy and the villain himself. Murder, kidnapping and seduction ensue.
In the made-up country of Alanien, King Alexander I has been overthrown while abroad. Now, he's in Vienna with his daughter, the city of his fondest memories since studying there as a boy. It doesn't take long for the charm of Vienna to work its magic on the former king: he quickly comes to terms with the new situation and is able to enjoy the Austrian capital sans all the ceremony and trappings which would otherwise accompany him on a state visit. The princess is content with preparing herself for a career as a pianist concert, while the former king takes a job as a chauffeur in the embassy of the country he once ruled. The revolutionaries are shocked; and his days in Vienna are numbered.
After many years on the oceans, sailor Hannes Wedderkamp has finally returned to Hamburg. On St. Pauli, Hannes sings songs from the sea in the hippodrome of his best friend Pitter Breuer on the Reeperbahn with the "Quetschkommode" songs and cares for the audience.