Kjeld Petersen plays a merchant who has stolen his clothes when he is out take a dip in the Sound. He stopped by the police, and they find a call to military service in his pocket, after further complications lands him at the barracks, where he came under the loving care of 66 (Dirch compatible) and 65 (Ove Sprogø). So the stage is set for lots of fun and games, in the right old style.

At the Copenhagen Conservatory of Music, Mogens Birk passes his organ exam with distinction. Together with his brother Steen Birk, he has supported himself during his studies by playing in the city's small taverns. Editor Jepsen from Bollerupager attends the exam, with a view to hiring a new organist for the city. At the parish council meeting, Consul Møller's daughter Kirsten, who was educated in Paris, is nominated, but Jepsen has Mogens as his candidate for the position, and he gets the job.

A group of better-off thirty-somethings meet for a weekend in Knud and Beth's home. The host couple is prone to bickering regularly. The married couples (Jan and Ilse, and Kjeld and Tove) that are visiting understand and try to stay out of the way. Bachelor Lars, however, comes into his own and is a constant source of provocative comments.