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.

“The performance begins!” - a circus show with the participation of the star of the Soviet circus Oleg Popov, Leonid Filatov, Magomed Magomedov and others.

Documentary film about the Soviet circus with the participation of Yuri Nikulin, Zinovy Gerdt, Yuri Durov, Mikhail Rumyantsev and Irina Shestua.

The famous artist bear Michel, having stopped training while on vacation, almost ruined another circus performance. But the bear cub Mishutka performed the main act for him—a flight under the circus dome.

A new girl becomes circus star despite her husband objective.