After five years of hard work in America Juraj Hordubal (Anatoliy Kuznetsov) returns back home. He is looking forward to his wife Polana (Libuse Geprtová) and his little daughter Hafie. The family and the village welcome him with hesitation. Everybody believed that Juraj died in America because Polana stopped receiving money from him already two years ago. Polana's farm was prospering first of all thanks to the young stable boy Stepán (Sándor Oszter). Men in the pub first indicate and then say to Juraj directly that Polana has been unfaithful to him with Stepán.
To Moscow have arrived the participants of the international conference of the zoophilologists and also the international jury which is to elect for the world festival the best performance of the program of Moscow circus. Mrs Whistler (Iva Janzurová), British associate professor, makes her understood with the animals in their language but the Czech professor Ruzicka (Jirí Sovák), though he is capable of using the animals language, prefers teaching the animals the human language. Ruzicka's friend, the poodle Archibald, speaks "in Human" very well. The scientific dispute ends with a bet - if Ruzicka teaches the circus elephant to sing, Mrs Whistler will eat up her hat.
This feature film based on the events of 1938 is a chronicle of the futile efforts of the Czechoslovak president Edvard Benes (Jirí Pleskot), politicians and ordinary citizens, to save the independence and the territorial integrity of the state from the advance of Hitler's Germany. On the 29th of March 1938 the leader of the Sudeten Germans Henlein (Werner Ehrlicher) has a meeting with Hitler (Gunnar Möller). Hitler orders him to intensify pressure on the Czechoslovak government. On the 24th of April in Carlsbad, the Sudetendeutsche Partei (Sudeten German Party) decides upon eight demands that are unacceptable to the Czechoslovak President, since they would ultimately lead to the break-up of the Republic. Benes still shows a certain willingness to negotiate, and Henlein resents this. The Germans are determined to make further negotiations impossible through incidents and violence.
The owner of a circus decides to swap his trained bears for trained pigs, and fires clown Cibulka. The clown gets a job at a local school, bears escape and seek him out and a school inspector comes into town.
