Zbyněk and Kateřina have become husband and wife, and Alenka is a beautiful young lady. Mothers and fathers know best how difficult this period in a family's life begins. The young lady begins to discover a hitherto unknown world in which former unbearable boys turn into quite tolerable young men. However, most of them have qualities that do not seem entirely ideal to their parents. If Zbyněk is a brother with the duties of a father, then with Alenka's adulthood he stands on the threshold of worries that will really confuse him...