To find Joseba, a dying friend, and see him reunite with his daughter Ely, two old friends, Jean Pierre and Tocho, embark with her on a road trip through the Sahara desert, from Spain to Mali.
You can now watch 4L online on the following streaming providers in the United States.
| Directing | Gerardo Olivares | Director |
| Production | Sergio Díaz | Line Producer |
| Production | Larry Levene | Executive Producer |
| Production | José María Morales | Producer |
| Editing | Domingo González | Editor |
| Art | Sonia Nolla | Art Direction |
| Costume & Make-Up | Rocío Pastor | Costume Design |
| Costume & Make-Up | Tono Garzón | Makeup Effects Designer |
| Costume & Make-Up | Yuraima Morcillo | Hair Department Head |
| Crew | Derek Levene | Post-Production Manager |
| Production | Gloria Rúa | Production Manager |
| Directing | Rafael Alvarado | Second Assistant Director |
| Directing | Jorge Calvo | First Assistant Director |
| Crew | Benoît Fabre | Stunt Coordinator |
| Crew | Francisco González Leal | Stunt Driver |
| Crew | Stéphanie Guerin | Stunt Double |
| Writing | Chema Rodríguez | Screenplay |
| Writing | Gerardo Olivares | Screenplay |
| Writing | María Jesús Petrement | Screenplay |
| Camera | Gonzaga Manso | Director of Photography |
