Mr. Čap is an inventor who disturbs the peace of the town of Krásnov with his experiments. During his attempts to discover the eternal match, smoke and a stench pour out of the window, accompanied by detonations. Some people are amused by it, others fear for their lives.
| Actor | Role |
|---|---|
 Vlasta BurianSilvestr Čáp | Silvestr Čáp |
| PPavla MaršálkováČápová | Čápová |
 Alena VránováManka | Manka |
 Rudolf HrušínskýPlánka | Plánka |
 František FilipovskýZatrapa | Zatrapa |
 Jiří SovákJenda Pospíchal | Jenda Pospíchal |
 Hana Vítováreferentka MNV | referentka MNV |
 Jaroslav Seníkpředseda ZR | předseda ZR |
 Eman FialaNot listed | Not listed |
 Růžena ŠlemrováJanurová | Janurová |
 Václav TréglKořínek | Kořínek |
 Karel Effalistonoš | listonoš |
 Růžena LysenkováNot listed | Not listed |
 František HanusNot listed | Not listed |
 Jiří VršťalaNot listed | Not listed |
 Stella ZázvorkováNot listed | Not listed |
 Fanda MrázekNot listed | Not listed |
 Karel PavlíkNot listed | Not listed |
 Milka Balek-BrodskáNot listed | Not listed |
 Sylvie DaníčkováNot listed | Not listed |
| AAleš KošnarNot listed | Not listed |
| VVěra VáchováNot listed | Not listed |
| JJaroslav JílovecNot listed | Not listed |
| VVáclav FišerNot listed | Not listed |
| SStanislav JarešNot listed | Not listed |
| ZZ. ChalupníkNot listed | Not listed |
| JJ. VacekNot listed | Not listed |