After the war, young yachtsmen from the coastal town deal with daily work, training and competitions without knowing about the downside. Suddenly, mysterious events start to happen, testing the vigilance, ideological and moral beliefs of the local people.
| Actor | Role |
|---|---|
 Rein ArenJuhan | Juhan |
 Ruth Peramets-PüssLaine | Laine |
 Kaarel KarmPeeter | Peeter |
 Õie OravKarin | Karin |
 Endel NõmbergRaud | Raud |
 Olev EskolaPaul | Paul |
 Evi RauerJuhani ema | Juhani ema |
 Kaljo KiiskHeino | Heino |
 Arvo KruusementJuuksur | Juuksur |
| AAlfred KüttToom | Toom |
 Rudolf NuudeBobrov | Bobrov |
| LLembit RajalaKarl Oksman | Karl Oksman |
 Aksel OravPiirivalvekapten | Piirivalvekapten |
 Valdeko RatasseppSpioon | Spioon |
| OOlev EensaluJahikapten | Jahikapten |
 Artur LinnamägiNot listed | Not listed |
| AArno SuurorgRaadioreporter | Raadioreporter |
| AAnts KorvNot listed | Not listed |
| AAleksander BõkovMishka | Mishka |
| VValentin KurtshikovSanka | Sanka |
| SSven JuckumElmar | Elmar |
 Eve KiviMember of the yacht club (uncredited) | Member of the yacht club (uncredited) |