At the Ruzyně airport, Pepíček Dušek and his group of young pioneers welcome the foreign delegation travelling through Prague to join the 6th International Youth Festival in Moscow. He mixes with the travellers and gets onto their plane by accident. Before he manages to get off, the plane takes off and Pepíček lands in Moscow. He notices a forgotten suitcase on the airport platform. He wants to return it to the owner but he finds himself in a crowd of Soviet pioneers and is taken to the city with them. There he meets the Russian boy Míša and with his help searches for the mysterious Mr Bláha, who, judging by its label, should be the owner of the suitcase. The suitcase opens by accident and the boys conclude from its contents that Bláha must be a diversionist. Trying to trace him, Pepíček and Míša witness the happenings of the multinational Festival. There is a search for the Czech boy. A taxi-driver recognizes Pepíček from a radio description and drives both boys to the airport. On their way, they notice Bláha performing as a juggler in the Czechoslovak programme. The secret of his suitcase is explained. On a TU-104 plane, Pepíček returns home even before his parents and brother arrive.

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Ústřední půjčovna filmů

Filmové Studio Barrandov