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.

Divorce lawyer Peter Ullrich’s seemingly perfect life shatters when his wife Katja suddenly leaves with their children. To shield his reputation, he hides the split and asks his clerk Thomas - himself reeling from family turmoil - to care for the kids. Amid comedic and touching moments, Thomas bonds with Peter’s children while both men grapple with love, loss, and unexpected emotional upheaval.