Somewhere in the Balkans, 1995. A team of aid workers must solve an apparently simple problem in an almost completely pacified territory that has been devastated by a cruel war, but some of the local inhabitants, the retreating combatants, the UN forces, many cows and an absurd bureaucracy will not cease to put obstacles in their way.
Unfortunately the movie A Perfect Day is not yet available on HBO Max.
| Directing | Fernando León de Aranoa | Director |
| Production | Camilla-Valentine Isola | Casting |
| Art | César Macarrón | Art Direction |
| Writing | Paula Farias | Novel |
| Production | Jaume Roures | Producer |
| Art | César Macarrón | Production Design |
| Production | Fernando León de Aranoa | Producer |
| Costume & Make-Up | Fernando García | Costume Designer |
| Costume & Make-Up | Agathe Dupuis | Makeup Designer |
| Camera | Álex Catalán | Director of Photography |
| Sound | Alfonso Raposo | Sound |
| Costume & Make-Up | Caitlin Acheson | Makeup Designer |
| Sound | Arnau Bataller | Original Music Composer |
| Production | Patricia de Muns | Executive Producer |
| Editing | Nacho Ruiz Capillas | Editor |
| Sound | Iván Marín | Sound |
| Production | Ana Parra | Production Manager |
| Directing | Antonio Ordóñez | First Assistant Director |
| Writing | Fernando León de Aranoa | Screenplay |
| Production | Luis Fernández Lago | Line Producer |
| Sound | Daniel Peña | Sound |
| Visual Effects | Ferrán Piquer | Visual Effects Supervisor |
| Visual Effects | Raúl Romanillos | Special Effects Supervisor |
| Costume & Make-Up | Agathe Dupuis | Hair Designer |
| Writing | Diego Farias | Co-Writer |
| Production | Javier Méndez | Executive Producer |
| Costume & Make-Up | Caitlin Acheson | Hair Designer |
| Production | Timka Grahić | Casting |
| Camera | Fernando Marrero | Still Photographer |
