After losing her father in the sea, Rosa is lodged in the house of the lighthouse keeper João Vidal. António Gaspar, also a lighthouse keeper, loves Rosa. His jealousy of João Vidal will provoke the death of Rosa, an act that the mother of António will help to cover up.
| Actor | Role |
|---|---|
 Maurice MariaudJoão Vidal | João Vidal |
 Castro NevesAntónio Gaspar | António Gaspar |
 Maria SampaioMaria Ana | Maria Ana |
 Abgaída de AlmeidaRosa | Rosa |
| AAugusto MachadoCabo do Mar | Cabo do Mar |
| SSebastião RibeiroTaberneiro | Taberneiro |
 Sofia SantosAntónio's Mother | António's Mother |