Fourteen-year-old Jan and his companion Erling appear as extras in a film being filmed at Nordisk Film's studios in Valby. A mysterious burglary at the studio's fine mechanics workshop gives the two healthy boys the opportunity to act as detectives.
as Jan
as Erling
as Lis
as Instruktøren
as Instruktørassistent
as Produktionsleder
as Inspektør
as Direktør
as Regissør
