Moscow, fall 1952--in the depths of the Kremlin, a covert plot against Stalin is ripening. 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 during the Bolsheviks Party assembly. The main character--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 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.