An adventure story for young people set in a summer camp for boaters in Juná. Eda, marked by a tragic experience of occupation, has difficulty getting along with the other boys. He only gains their trust and friendship when he helps to uncover German saboteurs.
| Actor | Role |
|---|---|
| AAntonín ŠůraNot listed | Not listed |
 Karel RichterNot listed | Not listed |
 Ladislav BoháčNot listed | Not listed |
 L. H. StrunaNot listed | Not listed |
 Stanislav NeumannNot listed | Not listed |
| OOskar HákNot listed | Not listed |
 Stanislav FišerNot listed | Not listed |
 Oleg ReifNot listed | Not listed |
| ZZdeněk BorovecNot listed | Not listed |
 Jaroslav SeníkNot listed | Not listed |
| JJosef ŠulcNot listed | Not listed |
| RRichard ZáhorskýNot listed | Not listed |
| VViktor OčásekNot listed | Not listed |
| JJiří ŠašekNot listed | Not listed |
| LLibor BaptistaNot listed | Not listed |
| VVáclav MyškaNot listed | Not listed |
| LLadislav HájekNot listed | Not listed |
| AAntonín MikuličNot listed | Not listed |
| JJosef TomanNot listed | Not listed |
| KKarel FolprechtNot listed | Not listed |
| MMiloslav KoubekNot listed | Not listed |
| JJiří KollingerNot listed | Not listed |
 Václav VorlíčekNot listed | Not listed |
| KKarel ŠašekNot listed | Not listed |
| OOldřich KrálNot listed | Not listed |