Young Greasers, known as Raggare in Sweden, gather at a café outside Stockholm. Roffe is the toughest greaser and kidnaps his girlfriend Bibban, when he discovers that she is out riding with other guys. Bibban falls in love with the sensitive Lasse.

Country bailiff believes that a man of the people shall exercise police work. Åsa-Nisse appointed to the local police for some time. "Nesses" sometimes odd methods will still work somehow. Åsa-Nisse and Klabbarparn then visit Gothenburg to see the singer Gun from Knohult at Liseberg. There they also take a tour of the roller-coaster.