1989-1990. General Secretary of the CPSU Mikhail Gorbachyov begins global transformations in the USSR. He passionately wants to become a star in world politics and for this he is ready to go as far as he can to meet the West. But the perestroika planned by Gorbachyov leads to fatal, irreversible consequences. Intelligence officer Alexander Nechaev finds himself at the center of an operation organized by the intelligence services of several countries. During the months spent in Berlin at the moment of the breakdown of the entire post-war world order, Nechaev changed a lot. He no longer knows who is a friend and who is a traitor, but continues to defend the honor and interests of his Motherland...