The defeat on the banks of the Kalka River does not change Genghis Khan’s plans for world domination. After the conquest of Asia, his gaze was fixed on Europe. No one knows when a new invasion will occur. In order to know his plans in advance, an agent is sent to the Horde, who voluntarily agreed to cooperate with the Russians. His position is precarious. He has no friends. He is surrounded only by enemies. Even his fellow tribesmen consider him a traitor. His code name is Spider.