A Hungarian explorer claims to have discovered a "Gold Library" inside a cave. Lacking evidence, he tries to get the recognition he believes he deserves but struggles to get support from the local governments and religious leaders.

On August 1st, 1976, Neil Armstrong, the first man to step foot on the Moon, joined a British-Ecuadorian expedition whose mission was to explore a cave located deep in the Amazon forest, called Tayos Cave. Why was a mission of such magnitude organized, and what was the British interest in the cave? A group of geologists and members of esoteric disciplines penetrate into Tayos' massive underworld to shed light on its dazzling enigmas.