Scooby-Doo and the Gang run for their mummies as ancient mysteries unravel. Archaelogist and super sleuth Velma is in Egypt for the unveiling ceremony of the restored Sphinx - a mysterious mythical creature with the head of a man and the body of a lion - only to discover a hidden tomb belonging to Cleopatra herself! But beward the ancient pharaoh's curse: "The Nile will fall, the desert shall rise and all who dare enter will be turned to stone!"...