4.000 years ago, four Egypt kings disappeared without any trace. The "Enigma of the lost Pharaoh" tells the history of this disappearance by presenting the discovery of a new necropolis located in the South of Saqqara, which could carry precise indications. Vassil Dobrev from the IFAO (French Institute for Oriental Archaeology) tries to solve this mystery around the pharaohs lost in the heart of the Tabbet al Guech desert and presents the discovery of the grave of Haou Nefer, priest of the Pharaoh Pepy pyramid. This spectacular film provides a new view on one of the most fascinating mysteries of the ancient Egypt.