Imhotep creates Bas-ket, who can sneak inside the castle to deliver the Vases to the Mummy. Sphinx and Imhotep devise a plan to use the Mummy/Tutenkhamen's immortality to their benefit a single Canopic Vase is able to bring him to life for a short while, but he still remains practically dead allowing him to safely venture the trap-riddled Castle of Uruk. However, because of Sphinx's actions he cannot disguise himself as Tutenkhamen to take power in Luxor as planned. The player then learns that 'Akhenaten' is in fact the dark god Set in disguise, and that the real Akhenaten was mummified in the same way as Tutenkhamen to allow Set to assume his form. In the Castle, Akhenaten gloats that the recent events were nothing but a minor setback.

Sphinx learns that fragments of Tutenkhamen's soul are stored in Canopic Vases, and takes on the task of recollecting them to restore him to his former self. Sphinx arrives and interrupts the ritual, causing Tutenkhamen, Akhenaten and his henchman Menes to be teleported to the Castle of Uruk. Meanwhile, the young Prince Tutenkhamen of Luxor celebrates his birthday, but his older brother, Akhenaten, captures him and performs a ritual that turns him into a mummy. Sphinx retrieves the Blade, but while trying to escape is also attacked by the ray and forced to travel to an unknown location through the use of a portal system. Horus is attacked and supposedly killed by a deadly ray that protects the Castle of Uruk. They are taken to Uruk, 'the land of darkness', where they eventually find the Blade. He and his fellow apprentice Horus are given the task of retrieving the legendary Blade of Osiris by their master, Imhotep. The fictional version of Egypt in which the game is set is in a period of turmoil when the player is introduced to Sphinx, one of the main protagonists.

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