30 years ago, 2 members of an unknown tribe - nicknamed Auré and Aurá - emerged from the Amazon jungle. The language they spoke baffled experts: it was unlike any they had heard before. They've pieced together a vocabulary of some 800 words, but questions remain. What happened to the tribe these men belonged to? And why were they the only ones to survive? Now Aurá lives alone. This program attempts to understand his story and solve the mystery of his past.