|Directed by||Zbigniew Rybczyński|
|Written by||Zbigniew Rybczyński|
|Produced by||Zygmunt Smyczek|
|Edited by||Barbara Sarnocinska|
|Music by||Janusz Hajdun|
The film depicts an initially empty room. A ball bounces in through the window, and a boy enters to retrieve it and leaves. This series of actions repeats over and over, gradually accompanied by more and more repeating paths of different people through the room. The film ends with the people eventually leaving the room and the boy throws the ball through the window one last time, landing near an old woman lying down. She then gets up, picks up the ball and leaves through the door near her.