Mborairapé

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.

A few decades after the destruction of the Inca Empire, a Spanish expedition led by the infamous Aguirre leaves the mountains of Peru and goes down the Amazon River in search of the lost city of El Dorado. When great difficulties arise, Aguirre’s men start to wonder whether their quest will lead them to prosperity or certain death.

After a cavalry group is massacred by the Cheyenne, only two survivors remain: Honus, a naive private devoted to his duty, and Cresta, a young woman who had lived with the Cheyenne two years and whose sympathies lie more with them than with the US government. Together, they must try to reach the cavalry's main base camp. As they travel onward, Honus is torn between his growing affection for Cresta.