Someone is murdered. Who is the killer? Members of all star cast are all suspects...

Åsa-Nisse is visited by cousin Doris from the United States. Nisse, Klabbarparn and Doris will travel to Stockholm, but Nisse and Klabbarparn lose track of Doris, who get into a hands of a Casanova. Nisse and Klabbarparn instead ends up at the Nordic Museum, where Åsa-Nisse turns out to have unexpected qualities in the art of imitating a mannequin. After that they had found each other is Doris robbed and it leads to a wild brawl that it sparkles and sputters on.

Pop music comes to Knohult and Åsa-Nisse has a new invention that makes his hens lay their eggs to the beat of the music.

Åsa-Nisse and Klabbarparn are winter fishing.

Åsa-Nisse's brother Julius returns home from USA, apparently very rich. Also, Åsa-Nisse och Klabbarparen takes care of a little child which leads to all sorts of complications.

Two twins, separated at birth, meet again by chance many years later. One is a progressive but insensitive mayor of a small town, the other a clown at a circus.

The idle rich have their own particular problems. Case in point, Georg and Monika Hedberg were once poor and happy but since Georg became an established painter family bliss has decreased for every fur coat Monika has bought. Their divorce lawyer suggest that they try to save their marriage by moving to a small apartment and live life frugally but happy. When the trial period is over and they want to return home again, their lawyer has stolen their money and disappeared. The Hedbergs are evicted for unpaid rent and terminal poverty seem to be imminent.

Major Grasser lives on his estate with his twin daughters Britta and Stina. Stina is studying at the university and Britta wants to work with farming. The major wants to put Britta in a school of commerce and hires a tutor to prepare her for higher education. This she dislikes and things doesn't gets better when her father thinking of selling the estate.

"In rain and shine" - Sid och Filibert are identical twins. Sid is a theater manager and composer and when his brother arrives to Stockholm for a position at the Museum of Natural History, Filibert is mistaken for Sid.

The marriage of the newlyweds Gun and Emil is strained when Gun sings in a radio show and makes a breakthrough.