Michael Dudok de Wit was asked by the famous Japanese animation studio Ghibli, to create his first feature length animated film. This would be Ghibli's first international co-production ever. Maarten Schmidt and Thomas Doebele followed Dudok de Wit and his team during the complex creative process for over two years. He is a perfectionist that is used to making his own hand drawn animated films by himself. For this new and timely production, he was assisted by a team of 20 to 30 artists from all over Europe.
| Directing | Thomas Doebele | Director |
| Directing | Maarten Schmidt | Director |
| Writing | Angela Dekker | Writer |
| Writing | Thomas Doebele | Writer |
| Production | Thomas Doebele | Producer |
| Production | Angela Dekker | Executive Producer |
| Production | Brigit Dopheide | Co-Producer |
| Production | Petra Vermeulen | Co-Producer |
| Crew | Maarten Schmidt | Cinematography |
| Editing | Thomas Doebele | Editor |
| Writing | Maarten Schmidt | Writer |
| Sound | Thomas Doebele | Sound |
| Sound | Tom Nestelaar | Sound Editor |
