A group of boys are spending summer riding their bikes across the city but suddenly they are forced to fight a group of thieves.
| Actor | Role |
|---|---|
| JJiří JarošVašek Dostál | Vašek Dostál |
| AAntonín HejtmánekJirka Trojan | Jirka Trojan |
| MMiroslav KrizanHonza Dostál | Honza Dostál |
| DDavid PospisilMiloš Svátek | Miloš Svátek |
| MMarcel RechFilip Valenta | Filip Valenta |
 Stanislav ŠárskýJan Šmídek | Jan Šmídek |
| BBožena BöhmováHolinová | Holinová |
 Maroš KramárDostál | Dostál |
 Marcela PeňázováMilada Dostálová | Milada Dostálová |
 Alena ProcházkováSvátková | Svátková |
 Mojmír MaděričNot listed | Not listed |
 Vlasta MecnarowskáNot listed | Not listed |
| HHynek KubastaNot listed | Not listed |
| KKarel SemerádNot listed | Not listed |
| ZZdeněk DvořákNot listed | Not listed |
| MMarcela ChlupováNot listed | Not listed |
| IIvan ŘehákNot listed | Not listed |
| MMarcela MikuláškováNot listed | Not listed |
| VVladimír HrabalNot listed | Not listed |
| KKarel HoffmanNot listed | Not listed |
| JJaroslava Franková TihelkováNot listed | Not listed |
| JJiří VychopeňNot listed | Not listed |