In the Kremlin's depths there is ripening a covert plot against Stalin. Stalin - the General Secretary of the Soviet Communist Party - is already 72 years old, but he is still able to arouse fear in his subordinates and subjects. The most reliable way to do away with the aged ruler and usurp his power is to use a powerful secret weapon right during the Bolsheviks Party assembly... The main character - the KGB officer Gleb Suvorov - finds himself involved in the dramatic events against his own will. But he must prevent the explosion and rescue the lives of the innocent people. Leading the main character through the tempest of the events, the player will visit the most prominent sights and secret underground objects of Moscow, like the existent subway stations, a secret military subway line, suburban catacombs, and many others. Prepare yourself for the immersion into the thrilling atmosphere of the Moscow dark 50s...