Adventure awaits 12 year old Brendan who must fight Vikings and a serpent god to find a crystal and complete the legendary Book of Kells. In order to finish Brother Aiden's book, Brendan must overcome his deepest fears on a secret quest that will take him beyond the abbey walls and into the enchanted forest where dangerous mythical creatures hide. Will Brendan succeed in his quest?
| Sound | Bruno Coulais | Original Music Composer |
| Writing | Fabrice Ziolkowski | Writer |
| Production | Viviane Vanfleteren | Producer |
| Production | Didier Brunner | Producer |
| Sound | Kila | Music |
| Production | Paul Young | Producer |
| Visual Effects | Tom Caulfield | Animation |
| Crew | Jean-Paul Commin | Thanks |
| Production | Serge Colibert | Administration |
| Visual Effects | Jean-Baptiste Vendamme | Animation |
| Visual Effects | Alessandra Sorrentino | Animation |
| Visual Effects | Corinne Kuyl | Animation |
| Crew | Marcos Alessandro da Col | Systems Administrators & Support |
| Crew | Eleni Chandrinou | Thanks |
| Crew | Siebe Dumon | Thanks |
| Crew | Barry O'Donoghue | Thanks |
| Production | Ivan Rouvreure | Executive Producer |
| Visual Effects | Lionel Marchand | Animation |
| Visual Effects | Joke Eycken | Animation |
| Sound | Dee Armstrong | Musician |
| Crew | Caroline Cor | Thanks |
| Crew | Pierre Héros | Thanks |
| Visual Effects | Samuel Brasseur | 3D Animator |
| Visual Effects | Herle Maria Kühl | Animation Supervisor |
| Sound | Sébastien Cortequisse | Sound Editor |
| Crew | Sarah Carmody | Thanks |
| Crew | Jonas Kestemont | Thanks |
| Crew | Rod Stoneman | Thanks |
| Visual Effects | Freek Quartier | 3D Animator |
| Visual Effects | Hermien Verstraete | Animation |
| Sound | Rossa Ó'Snodaigh | Musician |
| Production | Anton Roebben | Production Coordinator |
| Sound | Sébastien Marquilly | Sound Editor |
| Crew | Claire Paoletti | Thanks |
| Sound | Alexandre Fleurant | Sound Editor |
| Production | Lydie Tedesco | Administration |
| Visual Effects | Jeremy Purcell | Animation |
| Visual Effects | Andrzej Radka | Animation |
| Visual Effects | David Bols | Animation |
| Visual Effects | Pascal Maoloni | Animation |
| Sound | Slim Pezin | Musician |
| Production | Isabelle Truc | Executive In Charge Of Production |
| Production | Eric Goossens | Executive In Charge Of Production |
| Camera | Rémi Chayé | Second Unit Director of Photography |
| Crew | Roxanne Burchartz | Thanks |
| Crew | Louise Curran | Thanks |
| Crew | David Max Freedman | Thanks |
| Crew | Nessa King | Thanks |
| Visual Effects | Olivia Carpentier | 3D Animator |
| Visual Effects | Alfredo Cassano | Animation |
| Sound | Eoin Dillon | Musician |
| Crew | Fx Goby | Thanks |
| Crew | Aidan Harte | Thanks |
| Crew | Brendan McCaul | Thanks |
| Crew | Mark Woods | Thanks |
| Visual Effects | Fabian Erlinghäuser | Animation Supervisor |
| Visual Effects | Marie-Laure Guisset | Animation Supervisor |
| Sound | Colm Ó'Snodaigh | Musician |
| Crew | Paul Lavergne | Executive Music Producer |
| Crew | Patrick Schoeters | Thanks |
| Production | James Flynn | Executive Producer |
| Visual Effects | Darko Belevski | Animation Supervisor |
| Visual Effects | Vanessa Crahay | Animation |
| Production | Ross Murray | Executive In Charge Of Production |
| Production | Edit Sándor | Production Manager |
| Sound | Sébastien Marquilly | Sound Designer |
| Sound | Fabien Devillers | Sound Re-Recording Mixer |
| Crew | Hans Everaert | Thanks |
| Production | Jérôme Larivet | Administration |
| Visual Effects | Benoît Féroumont | Animation Supervisor |
| Crew | Naomi Kestemont | Thanks |
| Editing | Fabienne Alvarez-Giro | Editor |
| Visual Effects | Pierre Cambier | 3D Animator |
| Visual Effects | Elie Klimis | Animation |
| Crew | Emmanuel Delétang | Executive Music Producer |
| Art | Jonas Hoffmann | Title Designer |
| Production | Camille Leganza | Executive In Charge Of Production |
| Visual Effects | Eve Guastella | Key Animation |
| Art | Adi Merigeau | Background Designer |
| Production | Armelle Glorennec | Production Coordinator |
| Directing | Rémi Chayé | First Assistant Director |
| Crew | Karla Puttemans | Thanks |
| Crew | Sjef Scholte | Thanks |
| Art | Ross Stewart | Art Direction |
| Visual Effects | Tom Van Gestel | 3D Animator |
| Visual Effects | Barry Reynolds | Animation |
| Visual Effects | Rudi Mertens | Animation |
| Visual Effects | Pieter Vanluffelen | Animation |
| Sound | Lance Hogan | Musician |
| Sound | Maxime Lefevre | Sound Engineer |
| Production | Eric Jacquot | Production Coordinator |
| Production | Audrey O'Brien | Production Coordinator |
| Visual Effects | Dominique Gantois | 3D Animator |
| Visual Effects | Francis Combes | 3D Animator |
| Visual Effects | Lorraine Lordan | Animation |
| Visual Effects | Jean Morel | Animation |
| Visual Effects | Caroline Piochon | Animation |
| Visual Effects | Dani Alcaraz | Animation |
| Visual Effects | Michele De Feudis | Animation |
| Art | Aurélie Bernard | Background Designer |
| Sound | Jean-Philippe Audin | Musician |
| Crew | Stéphanie Hugé | Thanks |
| Crew | Philippe Reynaert | Thanks |
| Crew | Danielle Raaphorst | Thanks |
| Crew | Sara Wikler | Thanks |
| Crew | Jean-Luc Fromental | Thanks |
| Crew | Brendan McCarthy | Thanks |
| Crew | Inge Verroken | Thanks |
| Visual Effects | Pascal Vermeersch | Animation |
| Sound | Slim Pezin | Music Supervisor |
| Production | Marcelo Fernandes De Moura | Production Manager |
| Directing | Tomm Moore | Director |
| Writing | Fabrice Ziolkowski | Screenplay |
| Directing | Nora Twomey | Director |
