A young woman archaeologist searches for the wreck of a sunken boat during the 2nd World War to save the honor of her grandfather, a former sailor, accused of having hijacked the cargo of art objects he was loaded convoy to Algeria and embarked on a treasure hunt.
Unfortunately the movie The Secret of the Mai's Beauty is not yet available on HBO Max.
| Production | Antoni Camín | Associate Producer |
| Sound | Jean-Claude Nachon | Original Music Composer |
| Costume & Make-Up | Celine Durand | Hairstylist |
| Writing | André G. Brunelin | Writer |
| Costume & Make-Up | Régine Navaro | Key Makeup Artist |
| Camera | Jonny Semeco | Director of Photography |
| Production | Julien Grossi | Casting |
| Production | Frédérique Amand | Casting |
| Production | Quique Camín | Associate Producer |
| Sound | Angélique Nachon | Original Music Composer |
| Editing | Jacqueline Herbeth | Editor |
| Writing | Patrick Tringale | Writer |
| Production | Teresa Estrada | Casting |
| Art | François Salisch | Production Design |
| Costume & Make-Up | Marie-Claude Altot | Costume Design |
| Crew | Jean-Pierre Maricourt | Special Effects |
| Production | Nicole Flipo | Producer |
| Production | Quique Camín | Production Manager |
| Production | Jean-Luc Périchon | Unit Manager |
| Directing | Rodolphe Chauvin | Assistant Director |
| Directing | Matthieu Ciravegna | Assistant Director |
| Directing | Audrey Jannin | Assistant Director |
| Directing | Carles Valero | Third Assistant Director |
| Production | Stéphane Hernicot | Unit Manager |
| Art | Patrice Memeteau | Assistant Decorator |
| Art | Anne Violet | Assistant Decorator |
| Art | Jean Marc Druais | Construction Manager |
| Art | Michael Fortunée | Painter |
| Camera | Carlos Cabeceràn | Steadicam Operator |
| Production | Sabah Touami | Production Secretary |
| Sound | Philippe Penot | Foley Artist |
| Sound | Bernard Borel | Sound Engineer |
| Art | Laurent Robin | Props |
| Lighting | Miqui Pérez | Gaffer |
| Production | Mónica Muñoz | Production Assistant |
| Sound | Michel Sertillanges | Sound |
| Crew | Alain Brochery | Stunt Coordinator |
| Camera | Maurice Bricler | Grip |
| Directing | Agathe Sallabery | Script Supervisor |
| Production | Violeta Roca | Production Assistant |
| Lighting | Philippe Guyon | Electrician |
| Crew | Philippe Alton | Special Effects |
| Camera | Dominique Arrieu | Underwater Camera |
| Camera | Valérie Reich | Second Assistant Camera |
| Sound | Annie Lemesle | Sound Editor |
| Crew | Ingrid Le Pivert | Special Effects |
| Camera | Akim Baghad-Kabli | Grip |
| Camera | Jonny Semeco | Camera Operator |
| Production | Marie-Christine Birague | Administration |
| Camera | Juan Bueno | Grip |
| Costume & Make-Up | Malika Khelfa | Costumer |
| Camera | Philippe Priot | Key Grip |
| Production | Virginie Chazaut | Production Assistant |
| Crew | Marc Geria | Stunts |
| Camera | Valentin Monge | Steadicam Operator |
| Camera | Pierre Souchar | First Assistant Camera |
| Directing | Patrick Volson | Director |
| Crew | Jean-Christophe David | Special Effects |
| Camera | Diego Escribano | Key Grip |
| Sound | Christian Fontaine | Sound Re-Recording Mixer |
| Lighting | Pascal Clément | Electrician |
| Crew | Valérie Houchard | Stunts |
| Camera | Philippe Delacroix | Still Photographer |
| Crew | Rémi Vizier | Stunts |
| Camera | Patrick Caron | First Assistant Camera |
