The university student Bobchev joins a youth brigade. The commander's council entrust Bobchev with a literacy course for members of the brigade. Velizarov and Monkata arrive in the camp to carry out sabotage. They place explosives on the dam, and attempt to win Bobchev over by means of intrigue. There is a storm: the camp is put on the alert. Everyone joins the rescue work at the dam. After a long struggle with Velizarov, Bobchev cuts the burning fuse of the explosive. The dam does not yield to the pressure of the flood. Everymen sing in Jubilation.
| Actor | Role |
|---|---|
 Lubomir KabakchiyevIvan Bobchev | Ivan Bobchev |
 Apostol KaramitevVelizarov | Velizarov |
 Ivan StefanovNaydenov | Naydenov |
 Zheni BozhinovaNadya | Nadya |
 Petar DimitrovInzhener Tzachev | Inzhener Tzachev |
 Georgi Georgiev-GetzShlosera | Shlosera |
 Ivan TonevStefanov | Stefanov |
| DDimitar BochevKrasimirov | Krasimirov |
 Yordan MatevMonkata | Monkata |
| BBoyan PetrovMarin Bobchev | Marin Bobchev |
| IIvanka SladkarovaElena Bobcheva | Elena Bobcheva |
| TTinka AngelovaMaykata na partizanina | Maykata na partizanina |
| SSvetoslav StanilovVasilev | Vasilev |
| VVladislav MolerovKirov | Kirov |
 Rangel VulchanovNot listed | Not listed |
 Georgi KaloyanchevSali | Sali |
 Neycho PopovAhmed | Ahmed |
 Zhana StoyanovichRadka | Radka |
 Mariya RusalievaAngelina | Angelina |
| ZZvezda TzonevaMaria | Maria |
| KKatya DinevaTzvyata | Tzvyata |
| AAni DamyanovaYordanka | Yordanka |