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.
In 1900, Stepha, the vivacious 30 year old daughter of a wealthy couple, agrees to marry her cousin Paul, who has accumulated large debts as an Austrian army officer. Paul refuses to work or to consummate the marriage, and then his health steadily declines.
Twelve-year-old Jana returns from the hospital. She notices some changes at home and is worried that her parents are going to divorce. In reality, however, they are expecting another child.
