

The Explosion Will Be at Five
This tale is about young Ludvik (Robert Nespor) an erstwhile, budding scientist whose practical sense leads him to experiment before his common sense has figured out the results. Due to that unfortunate pattern, he variously floods the bathroom while working on displacement of volume and weight in water, he shatters the harvest pumpkins but not the law of gravity, and now he is eyeing the neighbor's rabbits for an electricity experiment. While the rabbits remain safe for awhile, Ludvik's parents wish he would follow in their more traditional footsteps and dedicate himself to music. Instead, Ludvik has learned that the proper mixture of a certain carbide and water can be explosive, and while he works on that technique, a friend tips off the physics teacher about these potentially disastrous plans.
| Actor | Role |
|---|---|
| RRobert NešporLudvík | Ludvík |
| Not listed | |
| Lumír | |
| Matěj | |
| OOldřich SlavíkNot listed | Not listed |
| Not listed | |
| Not listed | |
| ZZdeněk BlažekBuchtele | Buchtele |
| Učitel | |
| RRoman PravecPlichta | Plichta |
| Not listed | |
| FFilip VápNot listed | Not listed |
| JJolana MikeskováNot listed | Not listed |
| SSoňa PavelkováNot listed | Not listed |
| AAlice HlobílkováJiřičná | Jiřičná |
| BBohuslav JirsákNot listed | Not listed |
| KKarel SemerádNot listed | Not listed |
| Not listed | |
| MMarcela ChlupováNot listed | Not listed |
| RRoman MecnarowskiNot listed | Not listed |
| LLibuše BillováNot listed | Not listed |
| RRoman KasalaNot listed | Not listed |
| GGabriela MazalováNot listed | Not listed |
| GGabriela CaisováNot listed | Not listed |
| MMiroslav CaisNot listed | Not listed |
| PPavel ŠevčíkNot listed | Not listed |
| JJaroslav ČepickýNot listed | Not listed |
| MMartin JakešNot listed | Not listed |
| JJitka MalůškováNot listed | Not listed |
| PPavel MartinkaNot listed | Not listed |