Hakotep's flying pyramid has been grounded, but the heroes must enter the ancient tomb to deactivate the fleet of smaller flying pyramids poised to attack Osirion. Deep inside the Pyramid of the Sky Pharaoh, an untouched tomb from the heights of Ancient Osirion, the heroes face undying guardians woken from ageless sleep, climaxing in a final battle with the reborn Sky Pharaoh Hakotep, himself! Concluding the Mummy's Mask Pathfinder Adventure Path, Pyramid of the Sky Pharaoh is a Pathfinder Roleplaying Game adventure for 15th-level characters.