The inheritance inherited by Slavik Antonov turns into a curse - The door leading to the distant past is connected with other “wormholes”. Having crossed the line, you may find yourself not only “on the wrong side,” but you risk putting your own life and the lives of your friends at great risk. The third part of A. Martyanov’s “Heir” series allows the reader to wander not only in the historical past. Some Doors lead to other worlds. Where did some of the leaders of Germany hide in 1945 when they fled the Third Reich, which was dying under the blows of the Red Army? What secrets do the Ice Ages hold? Who did the GDR military intelligence collaborate with? Why is the Russian Prime Minister interested in researching space-time anomalies? Open the Door to the Other Side. These secrets are kept behind an invisible line.