Ana, a poor woman, agrees to be locked in an anechoic chamber, the most silent place in the world.
| Actor | Role |
|---|---|
 Lara MartorellAna / Esther | Ana / Esther |
 Pablo ViñaDirector | Director |
 Adrià EscuderoMateo | Mateo |
 Marian VilaltaPolice Chief | Police Chief |
| GGemma CastellsWoman / Ana | Woman / Ana |
| CClara GalánAssistant | Assistant |
 Orencio OrtegaEsther's Father | Esther's Father |
| DDavid HernándezAna's Son | Ana's Son |
 José TorresmaAna's Husband | Ana's Husband |
 Alberto AyalaDelinquent | Delinquent |
| FFrancisco HurtadoOld Man | Old Man |