Stirlitz, even in his worst nightmare, could not have dreamed of an intrigue on an international scale, similar to the one at the center of which was the Russian-German double agent Peter Steiner. Steiner receives information about a terrorist attack that will eclipse the explosion of the Twin Towers in New York on September 11. An explosion in Tehran during the summit of the heads of the Caspian states, as a result of which many people will die. Including the President of Russia... Steiner begins to unravel the devilish tangle, risking his life every second.