AllMovie

A thrill-seeking group of urban explorers sets its sights on Russia in hopes of locating and documenting Stalin's secret metro and unearthing Ivan the Terrible's notorious torture chamber in director David L. Cunningham's tense, globe-trotting adventure. Nate and his friends are adventure seekers who infiltrate the most treacherous man-made structures on the planet for little other reason than the fact that they can. Their latest mission has found them venturing deep into the underground of modern-day Moscow. As it begins to become increasingly obvious that the fearless adventurers may have gotten in over their heads this time, the physical and mental tolls incurred during their excursion will find them fighting for both their lives and their sanity against an all-consuming blackness that threatens to swallow them without a trace.