Little Jacob has just one wish for Christmas: he wants to finally meet his grandfather. But he has been missing for years and nobody in the family knows where he is. When Jacob confides his heartfelt wish to a Santa Claus at the Vienna Christmas market, he has no idea what turbulent developments he is setting in motion.
| Actor | Role |
|---|---|
 Klausjürgen WussowEduard Wagner | Eduard Wagner |
 Michael RollJochen Wagner | Jochen Wagner |
 Ursula BuschhornKatharina Wagner | Katharina Wagner |
 Michael LeschRobert Wagner | Robert Wagner |
 Alexandra KampSabine Pitzel | Sabine Pitzel |
 Karl MerkatzWilli Unger | Willi Unger |
 Alma HasunMaxi | Maxi |
| WWolf-Niklas SchykowskiJacob Wagner | Jacob Wagner |
 Ruth Brauer-KvamBiggi | Biggi |
 Martin MuliarFather | Father |