Knatten and Janne, just released from the prison of Långholmen, meet a romantic Stockholm in the 40s. Knatten tries to earn money while Janne is looking for the music.

Elof Ahrle
as Viktor Andersson, kallad Knatten

Alice Babs
as Britt Forsberg

Bengt Logardt
as Jan Löfgren

Åke Grönberg
as Åke, basist

Marianne Gyllenhammar
as Anne-Marie Beronius

Anders Börje
as Anders Börje

Hilda Borgström
as fru Löfgren, Jans mor

Douglas Håge
as Britts far

Carin Swensson
as Gullan

Nils Ferlin
as Nils Ferlin