De zevenjarige Moncho is bang voor zijn leraar, omdat zijn broer angstaanjagende leugens heeft verteld over deze zogenaamde wrede leraar. In werkelijkheid introduceert deze leraar zijn studenten in de wereld van poëzie en de natuur.
Nee, helaas is La lengua de las mariposas nog niet beschikbaar op Netflix in Nederland.
| Directing | José Luis Cuerda | Director |
| Writing | Manuel Rivas | Novel |
| Writing | Rafael Azcona | Screenplay |
| Writing | José Luis Cuerda | Screenplay |
| Sound | Alejandro Amenábar | Music |
| Sound | Ricardo Steinberg | Sound Designer |
| Production | José Luis Cuerda | Executive Producer |
| Production | Ana Míguez | Producer's Assistant |
| Production | Fernando Bovaira | Executive Producer |
| Production | Jose Maria Iresteiro | Associate Producer |
| Directing | José Ramón Otegui | Assistant Director |
| Art | Balter Gallart | Set Decoration |
| Costume & Make-Up | Sonia Grande | Costume Design |
| Directing | Pedro Loro | Assistant Director |
| Art | Josep Rosell i Palau | Production Design |
| Directing | Carmen Soriano | Script Supervisor |
| Costume & Make-Up | Teresa Rabal | Hairstylist |
| Costume & Make-Up | Ana López-Puigcerver | Makeup Designer |
| Production | Emiliano Otegui | Line Producer |
| Editing | Nacho Ruiz Capillas | Editor |
| Editing | Ignacio Cayetano Rodríguez | Editor |
| Camera | Javier Salmones | Director of Photography |
| Directing | Walter Prieto | Assistant Director |
| Directing | Mateo Gil | Assistant Director |
