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 | Zach Lewis | Screenplay |
| Writing | Jim Mahoney | Screenplay |
| Writing | Sergio Pablos | Original Story |
| Writing | Sergio Pablos | Screenplay |
| Writing | Edgar Martins | Head of Story |
| Visual Effects | Daniel Fernandez-Casas | Character Designer |
| Directing | Sergio Pablos | Director |
| Production | Eamonn Butler | Executive Producer |
| Production | Gustavo Ferrada | Producer |
| Production | Warren Franklin | Executive Producer |
| Production | Mercedes Gamero | Producer |
| Production | Jinko Gotoh | Executive Producer |
| Production | Mikel Lejarza | Producer |
| Production | Tanguy Olivier | Producer |
| Production | Sergio Pablos | Producer |
| Production | Marisa Román | Producer |
| Production | Matthew Jon Beck | Casting |
| Production | Micah Dahlberg | Producer |
| Art | Szymon Biernacki | Production Design |
| Sound | Carlos Sotolongo | Dialogue Editor |
| Visual Effects | Jorge A. Capote | Animation |
| Visual Effects | Olivier Clert | Animation |
| Visual Effects | Maxime Delalande | Animation |
| Visual Effects | Victor Ens | Lead Animator |
| Visual Effects | Borja Montoro | Animation |
| Visual Effects | Alex Orrelle | Animation |
| Visual Effects | Tom Sales | Animation |
| Visual Effects | Torsten Schrank | Character Designer |
| Visual Effects | Yoshimichi Tamura | Animation |
| Visual Effects | Matt Williames | Lead Animator |
| Directing | Carlos Martínez López | Co-Director |
| Editing | Pablo García Revert | Editor |
| Production | Micah Dahlberg | Casting |
| Art | Marcin Jakubowski | Production Design |
| Crew | Alan Tyler | Additional Music |
| Visual Effects | Charles Bonifacio | Lead Animator |
