"The protagonists of the film are two brothers - Smaller and Big, Filomena and the dog Klops. Big has problems at school, so he decides to run away from home. His brother decides to find him."
Robert Schmidt
as 'Mniejszy'
Magda Nałęcka
as Filomena
Tadeusz Drewnowski
as 'Duży'
Grzegorz Przybylski
as Mietek
Piotr Krawczyk
as 'Trąbka'
Henryk Bąk
as Neighbour
Henryk Borowski
as Narrator (voice)
Roman Kłosowski
as Kowalski
Anna Ciepielewska
as Mommy
Jan Kociniak
as Mister Józio
Andrzej Krasicki
as Mercedes owner
Eliasz Kuziemski
as Director
Zdzisław Leśniak
as Bartolomeo
Wiesław Michnikowski
as Daddy
Igor Przegrodzki
as Actor
Mieczysław Voit
as Markuszewski
Grażyna Torbicka
as Filomena's friend (uncredited)
Konrad Nałęcki
as Film director (uncredited)
Maria Osiecka-Kuminek
Set Decoration
Director
Wiktor Woroszylski
Writer
Bohdan Butenko
Set Designer
Stefan Matyjaszkiewicz
Director of Photography
Mira Stankowa
Editor
Zdzisław Dominiak
Sound
Stanisław Zylewicz
Production Manager
Original Story
Zygmunt Kaźmierski
Makeup & Hair
Jarosław Świtoniak
Krystyna Osiecka
Izabella Konarzewska
Costume Design
Włodzimierz Korcz
Music
Bolesław Dacko
Jerzy Matuszkiewicz
Roman Kolski
Novel