Imhotep prepares to sacrifice Evelyn, but she is saved after a tense battle with the mummified priests of Imhotep. Imhotep, Evelyn and Beni return to Hamunaptra, pursued by Rick, Jonathan, and Ardeth Bay.
Evelyn agrees to go with Imhotep, if he will spare the others. Imhotep pushes them into a corner, using an army of slaves-zombies are created from ordinary people. She believes that if the book of the Dead Imhotep back to life, the Golden Book of Amun-RA can kill him again, and calculates the location of the books: that is hidden under the statue of Horus, God of light. He hypothesizes that Imhotep wants to resurrect Ansunamun and planned to do so by sacrificing Evelyn. Looking for a way to stop Imhotep Rick Evelyn and Jonathan meet Ardeth Bay in the Museum. Imhotep helps benny, counting on a generous reward. To finish the job and be reunited with Ansunamun, an animated mummy, bearing the Ten plagues of Egypt, wishes to be reborn to haunt the members of the expedition, disturbing her peace. Out of curiosity Evelyn reads aloud the page of the ancient book and, not knowing awakens Imhotep. However, the two expeditions continue to excavate and find the sarcophagus, the book of the Dead and canopy with remaining organs Ansunamun. Upon arrival, they meet mediev under the leadership Ardeth Bey, who asked the travellers to leave the city, warning of the dangers that are lurking. The Americans are also heading to Hamunaptra. On the way to the target the travelers meet an American group of treasure hunters, led by Beni Gabor, a deserter from the squad of Rick. They want to know the way to the ancient city of the dead.
Three years later, Rick is in prison and awaiting execution, but it gets the librarian Evelyn "Evie" Carnahan and her brother Jonathan. Running away in the desert, O'connell notices a group of men on horseback watching him in the distance – mediev who decide not to kill him, believing that he will not survive in the desert. The Arabs are driving him into a corner, but can't fire, as their horses something are frightened they leave Hamunaptra, leaving O'connell alone, hoping that it will collide with whatever is in the sand. O'connell shoots the Arabs pistols, but he runs out of ammo.
O'connell leads fellow Legionnaires, but during the battle the Arabs kill all but two, the O'connell and a man named Beni Gabor. The town is attacked Arabs, commander of the French Foreign Legion is leaving and leaves Rick in charge. In 1923, the American captain Rick O'connell is in the squad of the French Foreign Legion in the territory of Hamunaptra, not knowing about the evil that lurks beneath it. Medjai and their descendants set myself the goal to prevent the return of Imhotep from the dead, because if that happens, possessing secular power, the power of the ancient Sands, and the glory of invincibility, he will bring down to Earth and all of humanity a wave of death and destruction. Imhotep cut out your tongue and bury him alive in a sarcophagus under the statue of the deity Anubis, condemning to eternal torment. As punishment for the unpardonable sacrilege of the priests of Imhotep mummified alive, and Imhotep himself is sentenced to the curse of the "Hom-Dai", the horrible ancient torture, which since then no one dared to repeat. Ansunamun soul returns to the underworld. Using the black Book of the Dead and five sacred canopic jars with the organs of Ansunamun, Imhotep manages to regain her soul from the afterlife, but medjai who followed Imhotep and his supporters do not allow you to bring the rite to the end. Imhotep under cover of night, secretly steals her body, and together with the faithful priests sent to the city of the dead and the main treasure of Egypt Hamunaptra to perform the ceremony of the resurrection, not fearing the wrath of the gods. Ansunamun to save her beloved from the wrath of the personal guards of the Pharaoh – mediev, appears to be the only culprit and kills himself. Caught by the Pharaoh, they are killing it. In the ancient Egyptian city of Thebes in the thirteenth century BC the high priest and guardian of the dead Imhotep sneaking around with a concubine of the Pharaoh SETI I named Ansunamun.