Summer in Germany, anno 1970. Italy is the number one destination. As every year, swarms of Teutonic tourists make their way to the Adriatic Sea. Only Willi Hirsekorn from Castrop-Rauxel has so far no plans to break south. That changes, however, as the bitchy neighbor Mizzi Buntje proudly tells of their upcoming holiday in Italy. Willi can not afford this boasting. Shortly determined, the bags are packed, and already rushes Willi in the car with his wife Sieglinde, daughter Lotti and son Kuno the sun.

Cafe owner Paul Perlacher is a real pig: not only are his daughter and sister Trude embarrassed constantly by his disgusting behavior, but his tenants are subjected to every legal trick under the Sun to get them to move out. Nevertheless, Amalie Hartning's a stubborn woman and can take care of herself well when it comes to her tyrannical landlord. If that weren't enough for Paul, his daughter's gone and fallen in love with the nephew of this pain in rear! And when Paul's ordered to jail by the courts, that really is the last straw.

Driving instructor Carola "Charley" can no longer stand the constant advances of her pupils and quits her job without further ado. To gain some distance, she takes the opportunity to look after her friend Lilo's dog, the two parrots and her apartment while Lilo is on vacation. But even here she has to fend off unloved admirers, as Lilo earns her living as a playgirl. However, "Charley" has received a good tip from her friend: As soon as a man becomes too pushy, janitor Pinkus pretends to be "Captain Tressblekken" on cue and quickly chases the visitors away. But when the real Uncle Tressblekken turns up at "Charley's" house, chaos can no longer be averted...

Retired tax official Willi Winzig spends his retirement happily and contentedly in his home. However, this changes when his sister Heidelinde, her daughter and his father want to move in with him, and as Willi is a good-natured man, he takes them in, but because they have no money and his pension is not enough for all four of them, he has to take on a new job. He gets a job as a salesman for household appliances, but his good nature gets in the way again.

Father Scherzer generally buries himself in the books of the castle library, which he is responsible for managing. He is a warm-hearted but somewhat overwhelmed father to his five daughters, ranging from a preschooler to two teenage girls to a successful press photographer who flirts with a dashing dentist. While he is trying to sell the castle to an overbearing American millionaire, the housekeeper quits, and the youth welfare office insists on discipline and order in the five-girl household.

Willi Winzig is a small tax officer with a big heart. He sometimes lets the tax files of his insolvent fellow citizens disappear into the air shaft. But shortly before his retirement, the shaft is so full that Willi has to dispose of the file of a penniless taxpayer in the wastepaper basket. The scam is promptly discovered and Willi is threatened with a hefty fine - even dishonorable dismissal from the civil service. Fortunately, friend and colleague Felix Klein knows what to do.

Little Erna is a cheeky Hamburg girl. She gets up to the greatest pranks with her boyfriend. That's why her mother sends her on vacation alone to her aunt. There, too, the little girl gets up to all sorts of mischief...