In a wooden hut used as a canvassing center, members of a children's puppet-theatre group are rehearsing for a production about a journey to the Moon. The goings-on inside the hut and outside are being closely followed by amateur detective Pepik Barnabás. He, however, is the first to be under suspicion when a trunk containing puppets goes missing. The children follow him but, when they catch up with him, they discover he hasn't got it. Pepík offers to help them in their search.
Martin Švehla
Karel Michálek
Zuzana Roithová
Michal Pelikán
Jindřich Pulec
Jan Křtitel Sýkora
Viktor Vaněček
Jan Klozar
Ota Sklenčka
Eva Danielová
Marie Brožová
Vojtěch Červenka
Vítězslav Černý
František Miroslav Doubrava
Josef Hlinomaz
František Jirásek
Běla Jurdová
Helena Karbanová
Luďa Marešová
Milan Neděla
Svatopluk Skládal
Světla Amortová
Jan Skopeček
Josef Svátek
Luděk Škuta
František Kovářík
Monika Lankašová
Zuzana Vrbová
Antonín Šindler
Eva Culková
Václav Wasserman
Jiří Zajíček
Zdeněk Týle
Jan Šmíd