A group of mariachis receives a letter to be part of the National Mariachi Contest in Mexico City. In order to be able to win they will need to travel together and solve their differences since their prime was 30 years ago.
| Writing | César Rodríguez | Screenplay |
| Writing | Mauricio Argüelles | Screenplay |
| Directing | Noé Santillán-López | Director |
| Production | Martha Higareda | Producer |
| Production | Eckehardt Von Damm | Associate Producer |
| Editing | Angel de Guillermo | Editor |
| Production | Mauricio Argüelles | Producer |
| Production | Francesco Papini | Co-Producer |
| Art | Juan Carlos Castillo | Production Design |
| Camera | Mario Gallegos | Director of Photography |
| Sound | Arturo Solar | Original Music Composer |
| Production | Jimena L. Arguelles Izaguirre | Associate Producer |
| Production | Sofia Granados | Production Assistant |
| Crew | Angel de Guillermo | Post Production Supervisor |
| Production | Farah Palomino Paredes | Production Manager |
| Sound | Felipe Zavala | Boom Operator |
| Sound | Talia Ruiz | Dialogue Editor |
| Costume & Make-Up | Michel Chavarría | Wardrobe Coordinator |
| Directing | Cynthia Marín | Second Assistant Director |
| Sound | Pablo Hopenhayn | Musician |
| Sound | Justin Moshkevich | Scoring Mixer |
| Costume & Make-Up | Atzin Hernández | Costume Design |
| Production | Alejandra Santana | Unit Production Manager |
| Art | Roberto Revilla | Set Dresser |
| Sound | Jeremy Underwood | Scoring Mixer |
| Costume & Make-Up | Denisse Zamudio Herrera | Costume Design |
| Costume & Make-Up | Ana Isabel Vallejo | Makeup Designer |
| Sound | Erick Ruiz Arellano | Sound Mixer |
| Production | Gustavo Baeza Vila | Assistant Production Manager |
| Directing | Valeria Villalobos | First Assistant Director |
| Art | Lizeth Elizalde | Graphic Designer |
| Sound | Miguel Ángel Molina | Sound Designer |
| Camera | Mario Gallegos | Camera Operator |
| Production | Mauricio Argüelles | Executive Producer |
| Production | César Rodríguez | Co-Producer |
| Art | Roberto Revilla | Set Decoration |
| Crew | Sergio Galicia | Transportation Coordinator |
| Production | Noé Santillán-López | Co-Producer |
| Art | Elena Hernandez | Art Department Coordinator |
