Sickan, Vanheden and Rocky try to rob the Berns nightclub one night, but Vanheden has made the mistake to invite his constantly drunk cousin, the old dynamiter Dynamite-Harry and he ruins the plan. Sickan is arrested, and has to spend 10 months in a small, locked room. When he is released, he has a new plan, but Rocky and Vanheden have decided to go straight. Together with Dynamite-Harry, Sickan plans to rob a cold store, managed by their arch-enemy, Wall-Enberg.
Gösta Ekman
as Charles-Ingvar "Sickan" Jönsson
Ulf Brunnberg
as Ragnar Vanheden
Björn Gustafson
as Dynamit-Harry
Nils Brandt
as Rocky Blom
Carl Billquist
as Detective Bertil Persson
Weiron Holmberg
as Biffen
Mona Seilitz
as Katrin Apelgren, "Plommonet"
Dan Ekborg
as Detective Gren
Sten Ardenstam
as Mr Appelgren
Peder Ivarsson
as Bill
Lena Söderblom
as Mrs Lundberg
Jarl Borssén
as The Night watchman
