I Dream in Another Language(2017)

Original title: Sueño en otro idioma

An indigenous language is in peril, as its last two speakers had a quarrel in the past and haven't spoken to each other in over 50 years. Martín, a young linguist, will undertake the challenge of bringing the old friends back together and convincing them to speak once again so he can obtain a recorded registration of the language and study it.