Een onhandige jongeman opent een postkantoor in een afgelegen dorp in het Noorden. Het enige probleem? Niemand schrijft er brieven. Aan zijn eenzame en werkloze bestaan tussen de norse bewoners komt een einde wanneer hij bevriend raakt met een bijzondere (Kerst)man, een speelgoedmaker genaamd Klaus.
| Sound | Alfonso G. Aguilar | Original Music Composer |
| Writing | Sergio Pablos | Original Story |
| Writing | Sergio Pablos | Screenplay |
| Writing | Zach Lewis | Screenplay |
| Writing | Edgar Martins | Head of Story |
| Writing | Jim Mahoney | Screenplay |
| Visual Effects | Daniel Fernandez-Casas | Character Designer |
| Directing | Sergio Pablos | Director |
| Art | Szymon Biernacki | Production Design |
| Production | Eamonn Butler | Executive Producer |
| Visual Effects | Victor Ens | Lead Animator |
| Production | Mercedes Gamero | Producer |
| Production | Matthew Jon Beck | Casting |
| Visual Effects | Borja Montoro | Animation |
| Production | Mikel Lejarza | Producer |
| Visual Effects | Alex Orrelle | Animation |
| Visual Effects | Matt Williames | Lead Animator |
| Production | Marisa Román | Producer |
| Visual Effects | Maxime Delalande | Animation |
| Production | Jinko Gotoh | Executive Producer |
| Visual Effects | Torsten Schrank | Character Designer |
| Production | Warren Franklin | Executive Producer |
| Production | Micah Dahlberg | Producer |
| Production | Sergio Pablos | Producer |
| Visual Effects | Olivier Clert | Animation |
| Production | Tanguy Olivier | Producer |
| Production | Gustavo Ferrada | Producer |
| Sound | Carlos Sotolongo | Dialogue Editor |
| Visual Effects | Jorge A. Capote | Animation |
| Visual Effects | Tom Sales | Animation |
| Visual Effects | Yoshimichi Tamura | Animation |
| Directing | Carlos Martínez López | Co-Director |
| Editing | Pablo García Revert | Editor |
| Art | Marcin Jakubowski | Production Design |
| Production | Micah Dahlberg | Casting |
| Crew | Alan Tyler | Additional Music |
| Visual Effects | Charles Bonifacio | Lead Animator |
