Sometimes you don't need a plot, just vibes.
Przechadzka is fundamently about fun of animation and playing with shapes. Just various shapes, more or less bizzares, moving about in their alien world, not quite acting like animals but in general to proactive to be seen as plants.
Weirdly enough, it reminds me a lot about Felix Colgrave's animations (Double king is one of my all time favourites in general).
Weirdly, looking through filmpolski.pl index (a very great database concering polish movies and tv shows) and this seems to not only be only time Marek Goebel has directed anything but also his only credit in general. He seemed to be way more involved with posters and illustrations.