Luci, Graci and Mar, three sisters that make a comedy trio, go to the wedding of their father with a woman who is 45 years younger than him. During the feast Luci's husband dies in an accident. Despite the tragedy, the trio have to fulfill their commitment acting during August in Benidorm. The widow discovers thanks to a notebook that her husband cheated on her, so she decides to flirt with everyone.
Unfortunately the movie What Makes Women Laugh? is not yet available on HBO Max.
| Directing | Joaquín Oristrell | Director |
| Writing | Manuel Gómez Pereira | Writer |
| Writing | Juan Luis Iborra | Writer |
| Writing | Yolanda García Serrano | Writer |
| Writing | Joaquín Oristrell | Writer |
| Costume & Make-Up | Gregorio Ros | Makeup Artist |
| Sound | Luis De Veciana | Sound Editor |
| Sound | Joan Vives | Music |
| Production | Marisol Pérez Aparicio | Casting |
| Production | David Jareño | Production Manager |
| Production | Óscar Rubio | Assistant Production Manager |
| Directing | Covadonga R. Gamboa | Third Assistant Director |
| Costume & Make-Up | Juanvi Fernández | Makeup Artist |
| Sound | James Muñoz | Sound Editor |
| Sound | Agustín Peinado | Sound |
| Costume & Make-Up | Mar Bardavío | Assistant Makeup Artist |
| Production | José Miguel Jareño | Assistant Production Manager |
| Directing | Pedro Manuel Lazaga | First Assistant Director |
| Sound | Ricard Casals | Sound Mixer |
| Crew | Ricardo Cruz | Stunts |
| Costume & Make-Up | Helena Sanchís | Costume Design |
| Camera | Fernando Arribas | Director of Photography |
| Costume & Make-Up | Jean-Jacques Puchu | Assistant Hairstylist |
| Crew | Reyes Abades | Special Effects |
| Directing | Álvaro de Armiñán | Second Assistant Director |
| Sound | Manuel Peinado | Boom Operator |
| Costume & Make-Up | Antonio Panizza | Hairstylist |
| Production | Emilio A. Pina | Production Manager |
| Directing | Edgar Farrán | Assistant Director Trainee |
| Editing | Miguel Ángel Santamaría | Editor |
| Art | Wolfgang Burmann | Art Direction |
| Production | Tino Calvo | Assistant Production Manager |
| Production | Carlos Baeza | Assistant Production Manager |
| Camera | Josu Inchaustegui | Steadicam Operator |
| Lighting | Rogelio Martínez | Electrician |
| Camera | Christian Molina | Second Assistant Camera |
| Costume & Make-Up | Pilar Tavera | Wardrobe Master |
| Crew | Ángel Megino | Transportation Coordinator |
| Directing | Yuyi Beringola | Script Supervisor |
| Production | Cecilia Maric | Production Secretary |
| Production | Fernando de Garcillán | Associate Producer |
| Production | César Benítez | Executive Producer |
| Production | Aramis Sierra | Location Manager |
| Camera | Fernando Arribas | Camera Operator |
| Production | Alfonso Jadraque | Location Manager |
| Production | Joaquín Oristrell | Producer |
| Camera | Raúl Martínez | Camera Trainee |
| Costume & Make-Up | Dolores Plaza | Costumer |
| Lighting | Fernando Beltrán | Electrician |
| Lighting | Rafael García Martos | Gaffer |
| Lighting | Antonio Martínez Roque | Electrician |
| Camera | Ramiro Sabell | First Assistant Camera |
| Lighting | Alberto Arnal | Electrician |
| Camera | Daniel Martínez | Still Photographer |
| Editing | José García | Assistant Editor |
| Production | Manuel Gómez Pereira | Producer |
| Camera | Carlos Miguel | Key Grip |
| Camera | Miguel Ángel López | Grip |
| Editing | Alfonso Sevilla | Assistant Editor |
| Production | Alicia Allepoz | Production Assistant |
| Lighting | Eugenio Martínez | Electrician |
