Will love compromise one man's devotion to heavy rock? That's the all-important question behind this broad comedy from Spain. Isi (Santiago Segura) and Disi (Florentino Fernandez) are two best friends who live in a lower middle-class neighborhood near Madrid. Isi and Disi aren't especially bright, but their devotion to heavy metal is complete and unquestioned, and they wouldn't be caught dead listening to a lame pop singer like, say , Joaquin Sabina. However, one day Isi sees Vane (Jaydy Michel), a beautiful girl who attends a nearby college, and immediately falls head over heels in love.
| Directing | Chema de la Peña | Director |
| Writing | Joaquín Górriz | Writer |
| Writing | Miguel Ángel Fernández | Writer |
| Production | Eusebio Gracia | Casting |
| Production | Patrick Juarez | Associate Producer |
| Crew | Unax Mendía | Cinematography |
| Sound | Roque Baños | Original Music Composer |
| Writing | Andrés Vicente Gómez | Idea |
| Art | Antón Laguna | Art Direction |
| Production | Andrés Vicente Gómez | Producer |
| Costume & Make-Up | Macarena Soto | Costume Design |
| Lighting | José Luis Arcos | Electrician |
| Sound | Fabio Huete | Boom Operator |
| Camera | Peque Griffin | Steadicam Operator |
| Crew | Pedro Raúl de Diego | Makeup Effects |
| Editing | Juanjo Carretero | Digital Intermediate |
| Crew | Roberto Armaiz | Stunts |
| Editing | María Lara | First Assistant Editor |
| Camera | Paola Ardizzoni | Still Photographer |
| Costume & Make-Up | Martha Marín | Hairstylist |
| Crew | José Carracedo | Property Master |
| Editing | Antonio García | Dialogue Editor |
| Sound | Patrick Ghislain | Sound Re-Recording Mixer |
| Production | Marco Gómez | Associate Producer |
| Crew | Enrique Silguero | Video Assist Operator |
| Directing | María Guerra | Script Supervisor |
| Production | Javier Bengoechea | Production Coordinator |
| Visual Effects | Sara Alavés | Visual Effects Producer |
| Costume & Make-Up | Almudena Fonseca | Makeup Artist |
| Writing | Guillermo del Olmo | Storyboard |
| Visual Effects | David Fernández Girón | 3D Supervisor |
| Sound | Ricardo Viñas | Dolby Consultant |
| Lighting | Emiliano Merino | Gaffer |
| Production | Luis Gutiérrez | Production Manager |
| Art | José M. Serrano | Assistant Art Director |
| Crew | Álvaro Domínguez | Driver |
| Camera | David Acereto | Camera Operator |
| Crew | Marcelo Firmano | Stunt Coordinator |
| Sound | Nacho Royo-Villanova | Sound Editor |
| Visual Effects | Félix Bergés | Visual Effects Supervisor |
| Camera | Manuel Álvarez | First Assistant Camera |
| Costume & Make-Up | Carmen Jambrina | Seamstress |
| Crew | José Ginés Martínez | Security |
| Camera | Luis Miguel Daza | Key Grip |
| Sound | Pedro Barbadillo | Assistant Sound Editor |
| Art | José Altit | Set Dresser |
| Directing | Javier Sánchez | Second Assistant Director |
| Crew | Javier Barañano | Pilot |
| Directing | David Chagoyen | Third Assistant Director |
| Editing | Esperanza González | Negative Cutter |
| Sound | Queti Pazos | Music Producer |
| Visual Effects | Gonzalo Caulonga | Effects Supervisor |
| Production | Chus San Pascual | Production Assistant |
| Costume & Make-Up | Raquel del Val | Costume Assistant |
| Camera | Eva Aycart | Second Assistant Camera |
| Production | Luján Blanco | Production Trainee |
| Crew | Santiago Millán | Generator Operator |
| Costume & Make-Up | María Amaro | Assistant Makeup Artist |
| Art | Natalia Montes | Graphic Designer |
| Camera | Paco Sánchez Polo | Focus Puller |
| Directing | Eusebio Graciani | Assistant Director |
| Editing | Miguel P. Gilaberte | Digital Intermediate Colorist |
| Sound | Julien Naudin | Foley Artist |
| Crew | David Campos | Special Effects Technician |
| Production | Elena Figaredo | Production Secretary |
| Editing | Antonio Lara | Editor |
