Ewa Kasprzyk

Ewa

Paweł Wawrzecki

Paweł

Maria Klejdysz

grandmother

Piotr Korczarowski

Piotruś

Leon Niemczyk

professor

Franciszek Trzeciak

plumber

Maciej Kozłowski

boy's father

Lidia Bogaczówna

boy's mother

January Brunov

tree defender

Monika Bolly

(uncredited)

Czesław Czapliński

scientist-photographer (uncredited)

Przemysław Dąbrowski

man (uncredited)

Lech Dyblik

man (uncredited)

Marek Kasprzyk

man (uncredited)

Ryszard Kotys

man (uncredited)

Radosław Popłonikowski

man (uncredited)

Jan Heba

man (uncredited)