Bad weather, farmers who do not allow the dumping of their estate, and people who are willing to sabotage for ideological reasons, disrupt the building of hydro-power on the Neretva river. Upon completion of construction, the benefits of electricity assures people of the necessity of progress.
| Actor | Role |
|---|---|
 Milivoje ŽivanovićPetar | Petar |
 Vera Ilić-ĐukićMara | Mara |
 Jovan MilićevićMato | Mato |
 Bert SotlarInženjer Černić | Inženjer Černić |
 Joža RutićFranjo | Franjo |
 Milan PuzićJerko | Jerko |
| JJozo LaurenčićIsmet | Ismet |
 Karlo BulićInženjer Šuvić | Inženjer Šuvić |
| AAleksandar 'Aca' StojkovićRadnik Antun | Radnik Antun |
| BBranka PantelićNot listed | Not listed |
 Dejan DubajićNot listed | Not listed |
| MMiroslav BelovićNot listed | Not listed |
 Vasa PantelićNot listed | Not listed |
 Viktor StarčićNot listed | Not listed |
| BBranko VojnovićNot listed | Not listed |