The sister of the famous mountaineer Freya Hannen, the famous Egyptologist and former intelligence agent Alex, is dead. The police have no reason to consider the incident a murder. But the Bedouin who gives Freya a bag with mysterious maps and films to Egypt when she arrived, clearly hints: her sister was killed. And danger threatens everyone who takes possession of these materials. At first, Freya simply brushes off his words, but soon realizes: he was not lying. Because now the people who killed Alex are hunting for her. And she cannot avoid death unless she discovers the secret of a long-forgotten oasis hidden somewhere in the African deserts. An oasis that still keeps the secret secret of the priests of Ancient Egypt...