The Milewskis are a middle-aged couple. Witold and Magda, both occupied with careers in managerial positions, create a solid, well-matched relationship. They have no children - this is Magda's decision, who preferred to pursue a career rather than take care of diapers. However, little remains of the bond they had at the beginning. Each Sunday, each of them cheats on their partner, and they both know nothing about it. Everything changes when Witold's younger brother Franek, a handsome geologist, shows up at their place.
as Magda Milewska
as Witold Milewski, mąż Magdy
as Gorczakowa
as barmanka Kasia
as kochanka Milewskiego
as Franek Milewski, brat Witolda
as inżynier Wesołowski, kolega Milewskiego
as właścicielka psa na boisku; nie występuje w napisach
