The events are set in Poznan, in late summer of 1939, at the onset of German invasion on Poland. It is a family tale involving two teen-age brothers of German descent, each of them taking opposite side in the events. One day they steal the car of a German consul, trying to take it for a ride in the country. They are arrested by the Polish police but then unexpectedly pardoned by the German consul, a liberal who reads Mann and Heine. The whole thing brings the brothers in contact with the 5th column. The question of national allegiance and family blood eventually divide the boys.
Polish Cinema Database <http://info.fuw.edu.pl/Filmy/>