Willy Fog wordt opnieuw uitgedaagd door Sullivan en gaat samen met zijn vrienden op zoek naar een geheim pad naar het middelpunt van de aarde, waarbij hij krachtige stromen en vreemde dieren ontwijkt.
Ja! de film Willy Fog: viaje al centro de la Tierra is nu beschikbaar om te kijken op Netflix in Nederland.
| Writing | Jules Verne | Novel |
| Writing | Rafael Soler | Adaptation |
| Sound | Guido De Angelis | Original Music Composer |
| Sound | Maurizio De Angelis | Original Music Composer |
| Production | Olga Pla | Production Assistant |
| Production | Cristina Nicolau | Production Coordinator |
| Production | Ray Hampson | Production Coordinator |
| Crew | Claudio Biern Lliviria | Post Production Supervisor |
| Production | Olivia Borricón | Production Supervisor |
| Production | José Manuel Iglesias | Associate Producer |
| Editing | Esteban Llorens | Editor |
| Editing | Lola Serrano | Assistant Editor |
| Editing | Iván Rodríguez | Assistant Editor |
| Art | Fernando Herraiz | Storyboard Artist |
| Art | Francisco Diaz Rojo | Storyboard Artist |
| Art | Jordi Guasch | Storyboard Artist |
| Art | Toni García | Storyboard Artist |
| Production | Manolo Castilla | Production Manager |
| Sound | David Richmond | Sound Effects |
| Sound | Toni Moliné | Sound Mixer |
| Visual Effects | Dani Tezanos | Animation Supervisor |
| Writing | Claudio Biern Boyd | Original Concept |
| Writing | Claudio Biern Boyd | Characters |
| Directing | Wang Yaquan | Director |
