Alain en Marie verhuizen naar hun droomhuis in een rustige buitenwijk. Hun makelaar had hen vooraf gewaarschuwd dat de kelder hun levens voorgoed kan veranderen. Op een dag ontdekt het koppel in die kelder een mysterieuze tunnel.
Nee, helaas is Incroyable mais vrai nog niet beschikbaar op Netflix in Nederland.
| Production | Thomas Verhaeghe | Producer |
| Camera | Quentin Dupieux | Director of Photography |
| Costume & Make-Up | Isabelle Pannetier | Costume Designer |
| Production | Olivier Père | Co-Producer |
| Sound | Martin Caraux | Music Supervisor |
| Production | Philippe Logie | Associate Producer |
| Writing | Quentin Dupieux | Screenplay |
| Editing | Quentin Dupieux | Editor |
| Production | Marine Albert | Casting |
| Costume & Make-Up | Romain Marietti | Key Hair Stylist |
| Costume & Make-Up | Dorothée Soual | Wigmaker |
| Sound | Charles Michaud | Sound |
| Lighting | Mickaël Bonnet | Lighting Technician |
| Camera | Lucie Colombié | First Assistant Camera |
| Directing | Anne Juin | Third Assistant Director |
| Sound | Alexis Place | Sound Editor |
| Crew | Paul Bourcart | Weapons Master |
| Camera | Hugo Manuelli | Additional Grip |
| Costume & Make-Up | Elfie Carlier | Costumer |
| Sound | Gadou Naudin | Foley Artist |
| Costume & Make-Up | Manon Lancerotto | Wardrobe Master |
| Art | Simon Tric | Property Master |
| Production | Agathe Preljocaj | Extras Casting |
| Production | Antoine Boulay | Assistant Unit Manager |
| Production | Stéphane Avenard | Unit Production Manager |
| Sound | Régis Boussin | Sound |
| Lighting | Renaud Garnier | Gaffer |
| Costume & Make-Up | Céline Vh | Hairstylist |
| Crew | Abraham Goldblat | Post-Production Manager |
| Art | Hugo Dubus | Assistant Art Director |
| Costume & Make-Up | Constance Allain | Additional Wardrobe Assistant |
| Directing | Benoit Seiller | Second Assistant Director |
| Art | Suzanne Arhex | Painter |
| Sound | Antoine Citrinot | Sound Editor |
| Crew | Frédéric Vallet | Stunt Coordinator |
| Production | Arnaud Tournaire | Production Manager |
| Sound | Charles de Ville | Sound Editor |
| Sound | Guillaume Le Braz | Sound |
| Camera | Axel Auger | Grip |
| Editing | Jean-Louis Guichaoua | Assistant Editor |
| Editing | Fabien Napoli | Colorist |
| Costume & Make-Up | Olivier Afonso | Special Effects Makeup Artist |
| Costume & Make-Up | Pierre Emmanuel Kass | Special Effects Makeup Artist |
| Costume & Make-Up | Alexandra Moulié | Special Effects Makeup Artist |
| Costume & Make-Up | Anthony Jagu | Hairstylist |
| Directing | Quentin Dupieux | Director |
