Fritz Zeckendorf

When Albers takes his drug-addicted opera star sister Gerda to a sanitarium, they both become targets of slimy dope peddler Peter Lorre, who fears that Gerda will blow the whistle on him. Lorre kidnaps the woman, leading Albers on a frantic chase.

Pierre is timid while his wife is ambitious and suffers from his mediocrity. She pawns everything she owns, rents a sumptuous apartment in a palace, and through bluffing, Pierre is appointed director of a perfume factory and the enterprising Arlette sees all her desires come true.

Because a sailor once told Pedro Savedra his wife, Marion, cheated on him, he left her. Learning later that it was nothing but a practical joke, Pedro decides to find her and win her back. He finally traces her in Palma de Mallorca, where she has become a cabaret singer. To set her free, he needs money and accepts a job. But Palesco, the nightclub owner, does not agree to let Marion go and will not shy about throwing a wrench in the gears.

A series of stupid coincidences causes the young Munich painter Paul to convert his uncle's castle into a hotel for four weeks. But he can't complain: business is good and he has plenty of guests. For exmple, there's Theo Muller with his revue troupe. For reasons of "sound", Muller calls himself "Miller", which, of course, causes more confusion. His daughter, the beautiful Evelyn, is confused with Mabel Miller, who has come to the hotel on a mission for her filthy rich father ... namely, to estimate the worth of the castle.

An Italian engineer who had made a strategically important invention to ward off enemy aircraft is killed in a robbery. As the plans have presumably fallen into the hands of spies, secret service captain Bergall is given the task of recovering the papers. Bergall initially adopts a false name and appears as Mr. Gran, whom nobody knows. Under this name, he rents a room in the Hotel Danieli in Venice and makes the acquaintance of the shipowner's daughter Viola Dolleen. With her help, he is able to eliminate Captain Gordon, who is also interested in the plans. When Gran learns that the plans are now in the possession of the art dealer Tschernikoff, who wants to sell them to Gordon, he immediately travels to Rome, visits the art dealer Titian and pretends to be Gordon. In the art dealer's remote villa, events come thick and fast...

The story follows a movie crew who is filming a musical in a small and idyllic alpine village. After their temperamental leading lady drops out of the film, they decide to replace her with the village's young post office clerk Gretl, who returns to Berlin with them. There she has to struggle with the movie's all-male crew, who all try to woo and win her.