A group of young geologists hires a desperate female guide to take them to a mysterious mining town that had a fire many years ago and is no longer marked on maps. Having got lost, the company asks for directions from the locals, but they advise to get out of the way and even begin to pursue intruders. Despite this, geologists still find a road hidden in the forest and an abandoned town surrounded by an energized fence, and inside the perimeter there are strange holes in the ground.