The film shows the strong human will to survive based on the story of two men buried alive in the basement of the fortress in Przemyśl.
During World War I a captain and a lieutenant of the Russian Army are buried alive in the basement of the fortress in Przemyśl. There are huge food supplies underground as well as a water well. They also have candles to light up the darkness. The captain can’t cope with isolation, he loses his mind and commits a suicide. The lieutenant who’s reconciled himself with loneliness, keeps a diary that helps him survive. After eight years spent underground laborers who are dismantling the fortress find him alive.