The plot in this movie is very thin, and there is not much acting. Val Kilmer--I don't know why he agreed to do this movie--plays a minor role as a gang leader. In short, the movie is tedious to watch.
One guy, who sort of resembles an archeology/religion professor, is exploring a subterranean area of Moscow, that has some history connected to railway construction and the Bolshevik revolution. A church tragedy in that history makes the exploration "spiritual" and spirits of a malevolent intent haunt the underground ruins. A friend of the professor decides to find his friend in the underground and hires a couple of Russian guides. The entire movie is based on this plot and contains much repeated footage of the underground, and some camera effects; much like those seen in "Day Watch", "Night Watch", etc.