A young girl, her new friend and his dog try to find a long-lost Picasso painting in an abandoned house before a gang of burglars seize it.

Hanna Hryniewicka
as Julka Strzałkowska

Jakub Janota-Bzowski
as Olek

Piotr Głowacki
as Szef

Roma Gąsiorowska
as Agata

Joanna Szczepkowska
as Ciotka Julki

Maria Maj
as Pulchna

Jadwiga Jankowska-Cieślak
as Chuda

Krzysztof Stroiński
as Muzealnik

Michał Grzybowski
as starszy aspirant Michalski

Jakub Wielecki
as (uncredited)