The film stars Ernst-Hugo Järegård as the prisoner Harald Hansson, a break-in expert, who one day meets Frida and her friend and learns how to bake cookies. He considers a career change, especially when he falls in love with Flora, the daughter of a city judge.
The film is a cult comedy by Hasseåtage. Memorable scenes in the film are the car chase with Järegård, the musical show number in the cell performed by Jan Malmsjö, and the show number carried out simultaneously in the exercise yard by Järegård, Malmsjö and Urban Sahlin; and practically every scene with Ekman as the prison governor.
The film was meant to comment on the criminal system and view of criminals in society (both in Sweden and worldwide).