Rocio, a Maya Mam girl, lives in the mountains with her mother, who is pregnant and her granny. Due to an early delivery from her mother, Rocio is stuck with caring for a herd of sheep, the first time she has done it on her own. Playing in the mountains she loses one of the sheep. Looking for it, she will lose the rest of the herd. In the midst of this tragedy, Rocio will have to face her innocence, conquer her fear of fog and learn that freedom entails responsibility. Nature will teach her that you do not have to defeat your fears, you just have to experience them. The Greatest House in the World is a story of children -which we all are- when facing fears, the unknown, the uncertain... the fog.
| Directing | Ana V. Bojorquez | Director |
| Directing | Lucía Carreras | Director |
| Editing | León Felipe González Sánchez | Editor |
| Directing | Ulises Pérez Mancilla | Script Supervisor |
| Writing | Edgar Sajcabun | Screenstory |
| Writing | Edgar Sajcabun | Screenplay |
| Writing | Ana V. Bojorquez | Screenplay |
| Production | Sandra Paredes | Producer |
| Production | Ana V. Bojorquez | Producer |
| Production | Marco Antonio Salgado | Producer |
| Production | Jorge Ramírez Suárez | Producer |
| Production | Bulmaro Osornio | Co-Producer |
| Production | Epigmenio Ibarra | Co-Producer |
| Crew | Álvaro Rodríguez S. | Cinematography |
| Sound | Pascual Reyes | Music |
| Art | Lola Ovando | Art Direction |
| Costume & Make-Up | Gabriela Fernández | Costume Design |
| Sound | Samuel Larson | Sound Designer |
| Crew | Enrique Ojeda | Sound Recordist |
| Costume & Make-Up | Malinalli Contreras | Makeup Department Head |
| Production | Juan Pablo Díaz | Casting |
| Production | Álvaro Armas | Casting |
| Production | Andrés Rodríguez | Casting |
| Visual Effects | Alejandro Berea | Visual Effects Supervisor |
| Crew | Bulmaro Osornio | Post-Production Manager |
| Production | Julieta Blázquez | Production Manager |
| Production | Héctor Paredes | Production Manager |
| Directing | Pablo Prieto Ladrón de Guevara | Assistant Director |
| Directing | Álvaro Armas | Assistant Director |
| Crew | Ulises Pérez Mancilla | Sequence Supervisor |
| Art | Marlene Rodríguez | Set Decoration |
| Crew | Martín Gutiérrez | Property Master |
