Eager to spend the summer at camp, the young Jönsson gang finds itself instead at a punitive, hardscrabble institution run by their archenemy.
as Charles-Ingvar "Sickan" Jönsson
as Ragnar Vanheden
as Dynamite - Harry
as Doris
as Wall-Enberg Junior
as Biffen
as Director Wall-Enberg
as Miss Rask
as Märta Gabrielsson
as Professor Rixil
as Miss Fridh
as Janitor
as Loket
as Junior's friend
as Junior's friend
as Stig
as Ulf
