Two happy married people, Michal and Blanka, experience a regrettable mistake: the wife leaves home with their young son, but unfortunately the husband does not find the letter explaining why. Normally he would wait until the matter explains itself, he does not believe that his wife would just leave him, but he is subjected to many pressures: from his own parents, his neighbor, his mother-in-law and his "good friends". They all advise immediate divorce as the only solution.