In the middle of the Egyptian desert, an excavation crew headed by Peter Conrad hits upon a huge burial ground. The archaeologists quickly notice that things don’t fit together. The mummies they find cannot be dated and show signs of severe congenital diseases. And the religious inscriptions littering the site are equally mysterious. As Egyptologist Lisa Franks discovers clues that the Nazis carried out top-secret excavations here back in the day, a member of the team is found stabbed to death.
At the same time, East Berlin is shocked by a series of murders, that brings Volkspolizei-Hauptmann Josef Keller face to face with a conspiracy that goes back to the days of the Third Reich, and seems to be connected to the events in Egypt.
After a raid on the excavation house, Peter and Lisa manage to flee from Egypt. But that is only the beginning of a deadly hunt for a secret society in the divided city of Berlin.