The year is 2034. Many years ago, a nuclear war ravaged most of the world. People survived only in the unimaginably vast metro networks in the big cities. Down in the underground they created a new unique civilization. However, the existence of this civilization is now threatened. Something mysterious is happening at the remote Sevastopolskaya station. Its inhabitants are troubled because the northern tunnel - their only connection to the outer metro - has stopped getting any news to them. All the scouting parties they had sent there disappeared without a trace. In this situation, the mysterious Commander Hunter, who appeared on Sevastopol only a few weeks ago, decides to get to the bottom of the mystery...