A film crew from the “Debut” studio heads to the Pamirs. The film will be shot in the area of the Yazgulyam ridge, where they are laying a tunnel. No one knows the details—everything is shrouded in mystery. Meanwhile, strange, inexplicable phenomena occur both in the mountains and inside the tunnel itself.
Not only members of the film studio crew, but also members of a community seeking enlightenment in the mountains, the builders, and Mарат Kalitin, a former employee of the “Bars” detective agency, are drawn into their orbit. The origins of these mysterious events are found in South America, in the ancient Inca empire that worships the sun and glorifies gold.