Margot is looking forward to moving into the old defense tower with her fiancé Lutz, a writer. Then the writer receives the news of his sister's death. Lutz is supposed to take in their children Traudl and Rudi and the dog Leo. Margot did not expect so much attachment...
| Actor | Role |
|---|---|
 Heinz RühmannLutz Ventura | Lutz Ventura |
 Marianne KochMargot Ventura geb. Sonnemann | Margot Ventura geb. Sonnemann |
 Hans LeibeltPastor Miesbach | Pastor Miesbach |
 Paul EsserFriedrich Roeckel | Friedrich Roeckel |
| EEdith SchollwerOttilie Roeckel geb. Lüdecke | Ottilie Roeckel geb. Lüdecke |
 Agnes WindeckCarer | Carer |
 Kurt MeiselDressmaker | Dressmaker |
| HHans Waldemar AndersSchulvorsteher | Schulvorsteher |
| LLuigi MalipieroPostman | Postman |
 Franz-Otto KrügerRegistrar | Registrar |
| MMaren BielenbergGertrud 'Traudl' Lüdecke | Gertrud 'Traudl' Lüdecke |
| RRolf PineggerRudi Lüdecke - boy | Rudi Lüdecke - boy |