The Mahlström family has been traveling to Södenhagen on the Baltic Sea for 15 years. But this year everything is getting out of hand: Kurt is about to become unemployed and can no longer afford to go on vacation. His marriage to Marga is in crisis and Kurt doesn't dare tell his wife about his difficulties. Pubescent Kati is also in a bad mood because she would rather have gone to France with her friends, and she falls in love with the chaperone Dominik.
| Actor | Role |
|---|---|
 Uwe OchsenknechtKurt Mahlström | Kurt Mahlström |
 Petra ZieserMarga Mahlström | Marga Mahlström |
| KKevin KöppeFelix Mahlström | Felix Mahlström |
 Jacob MatschenzZivi Dominik | Zivi Dominik |
| BBobby BrederlowRolph Weia | Rolph Weia |
 Karl KranzkowskiFiete Mathissen | Fiete Mathissen |
 Hans-Jochen WagnerPastor Gerhard Müller | Pastor Gerhard Müller |
 Annika PreilMarbella Thoben | Marbella Thoben |
 Jockel TschierschDieter | Dieter |
 Johanna BittenbinderFriseurin | Friseurin |
 Alina SokarNot listed | Not listed |