At Santa Claus School, the principal has called a meeting. Lucia, her parents Julius and Claudia and everyone else at school are excited. But the tension is replaced by a shock when the headmaster cancels Christmas. He seems confused, and it soon becomes clear that he is trapped in a Christmas trauma from his younger days as Santa Claus. Lucia sets out to find out what has happened and with the help of the younger student Elias and a magical time machine, she travels back in time in the hope of saving Christmas.
| Actor | Role |
|---|---|
| CCecilia LoffredoLucia | Lucia |
| LLeonard Mangheni Sommer IpsenElias | Elias |
| HHerman KnopValdemar | Valdemar |
 Mia LyhneClaudia | Claudia |
 Martin BuchJulius | Julius |
 Ulf PilgaardRektor | Rektor |
 Thomas Bo LarsenVon Ravn | Von Ravn |
 Kirsten LehfeldtDR. Herz | DR. Herz |
 Jacob HaugaardJens Boye | Jens Boye |
 Kristian HalkenLitteramus | Litteramus |
 Jens Zacho BöyeKalorius | Kalorius |
| CChristian IversenUng Rektor | Ung Rektor |
 Farshad KholghiAli Muliman | Ali Muliman |
 Noah Fredberg MeleadyFedtegreven | Fedtegreven |
| JJakob HansenRotten | Rotten |
| IIngrid Thunbo IlskovMargrethe | Margrethe |
| AAnna-Olivia Øster CoakleyLille Lis | Lille Lis |
| MMathias Keis PedersenThor | Thor |