It's Christmas, and children at an orphanage in Maliszewo receive a computer that was given to them by another orphan who used to live there many years ago. During the night, the computer awakes itself and tells the children a story that will happen in 25 years...

Piotr Fronczewskias Ambroży Kleks
Henryk Bistaas Great electronics
Jan Jankowskias Jacek Bronowski / Max Benson
Emilian Kamińskias You smooth it out / 'Hairy fellow'
Maryla Rodowiczas Linella
Bohdan Smoleńas Jarzabek / Manuel Karmello de Bazar
Mieczysław Gajdaas Melodarek (voice) (uncredited)
Irena Kwiatkowskaas Information orb (voice) (uncredited)
Henryk Talaras Computer Lucas (voice) (uncredited)
Włodzimierz Głodek