Důvod k rozvodu

Composer Pavel Bertl is a drunkard and gambler who manages over a few years to gamble away all the family property. Werner, a lawyer, follows the unhappy life of Pavel's wife Helena and suggests she get a divorce. Helena, however, still loves Pavel and refuses. Werner thus convinces Pavel to set a trap for Helena which would prove Pavel's infidelity. They involve Anna Plavcová in their plans, a girl Helena had got to know at the pawnbrokers when the latter was pawning her last piece of jewellery. Anna and Pavel go off to the mountains together accompanied by Špargl who is to photograph them in a compromising situation. Špargl does his job and the photograph fulfils its aim. Helena divorces Pavel. The whole affair ends badly for Anna, whose boyfriend, the illusionist Skála, leaves her as well. After the divorce, Anna confesses to Helena that the photograph was a set-up and that Pavel had not been unfaithful to her. Helena forgives Pavel and Skála also realises that Anna had not betrayed him. Both couples then begin making wedding plans. (official distributor synopsis)