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.
| Actor | Role |
|---|---|
 Santiago SeguraIsi | Isi |
 Florentino FernándezDisi | Disi |
 Jaydy MichelVane | Vane |
 Ana RisueñoDebo | Debo |
| RRuth ZanonKuki | Kuki |
 José Luis CollChinchón | Chinchón |
| MManolo de VegaEugenio | Eugenio |
 Joaquín SabinaÉl Mismo | Él Mismo |
 Miguel Ángel Rodríguez 'El Sevilla'Pota | Pota |
 Elia GaleraSargento Sánchez | Sargento Sánchez |
 Eduardo GómezAgente Pitu | Agente Pitu |
| ÁÁlex AnguloConductor | Conductor |
 Miriam Díaz-ArocaNovia del padre de Vane | Novia del padre de Vane |
 Máximo ValverdePadre de Vane | Padre de Vane |
 El Gran WyomingPolicía | Policía |
 Canco RodríguezBombero | Bombero |
 Juan Alberto de BurgosBombero | Bombero |
| RRoberto MarchettiAngus Young | Angus Young |
| GGabriel VelázquezDependiente de Sex-Shop | Dependiente de Sex-Shop |
| AAlfonso LussónInstructor de vuelo | Instructor de vuelo |
 Pancho VaronaMúsico | Músico |
 Antonio García de DiegoMúsico | Músico |
| OOlga RománMúsica | Música |
 Jaime AsúaMúsico | Músico |
| PPaco BeneytoMúsico | Músico |