In 1301 BC Thebes, Egypt, thieves are caught raiding King Tutankhamun’s tomb in the Valley of the Kings. Menephta, the architect planning King Seti I’s tomb, questions a thief who claims that any unguarded tomb will be robbed. When he claims that greed makes men fanatical, Menephta declares he has learned the secret to guarding Seti’s tomb. In 1981, Boston, Massachusetts, Egyptologist Dr. Erica Baron visits Egypt for the first time, researching a paper on Menephta. At the Cairo museum, she and a curator discuss a discrepancy regarding the 1922 discovery of King Tutankhamun’s tomb. At the time, financier Lord Carnarvon declared there was a papyrus scroll inside, but archaeologist Howard Carter denied the claim. An Egyptian foreman, Sarwat Raman, was also present, but left no written account of the findings. Erica visits Abdu Hamdi’s shop, interrupting an argument between Hamdi and Stephanos Markoulis, who storms away. After Erica verifies her credentials, Hamdi leads her to his apartment above the shop and reveals a hidden gold statue of Seti I, with inscriptions referring to Seti, Tutankhamun, and Menephta. Men arrive downstairs and, after spying them through a hole in the floor, Hamdi hides a letter inside a book, asking Erica to bring it to his son, Tewfik, when she visits Luxor. As Hamdi returns to his shop, Erica photographs the statue. Overhearing an argument below, she peers through the floor hole as Hamdi is murdered. Erica hides outside as the men search Hamdi’s shop and apartment, leaving with the statue. When Erica retrieves her purse, a killer returns for his knife, but she is saved by a journalist, Yvon, who fights off the attacker. Although Erica wants to go to the police, Yvon asks her to wait. Over tea, Yvon claims that Hamdi offered him information on black market Egyptian antiquities. Hamdi was playing all sides, and infringed on Stephanos Markoulis’ smuggling operation, so Markoulis had the shopkeeper killed. When Erica returns to her hotel, she is detained by the Department of Antiquities’ Ahmed Khazzan. He later questions her and Yvon at his office, insisting that the black market is draining Egypt’s resources. When Khazzan asks why they did not report Hamdi’s murder, Erica admits the killers’ motive was the Seti statue. Khazzan warns her not to leave the city without permission, then assigns Officer Gamal to follow her. The next day, Erica heads for the pyramids with her guide, Selim, unaware that Gamal and a mysterious criminal named Khalifa are trailing them. When Khalifa attempts to shoot Erica, Gamal is killed as he saves her. At the police station, Erica is nearly raped by an officer, but Khazzan rescues her. That night, she peruses Hamdi’s book and discovers the letter inside, but is unable to read the Egyptian text. When a hotel clerk delivers her developed photographs of the statue, she asks him to translate the note in which Hamdi warns his son, Tewfik, that the situation involves more than the statue. The next day, Yvon finds Erica researching at the museum and she reveals her plans to visit Luxor where Menephta performed most of his work. Just then, Erica spots Markoulis nearby, and Yvon gives chase. As Erica searches for a security office, Markoulis grabs her and reveals that Yvon divulged that she was a witness to Hamdi’s murder. Before Markoulis can hurt her, Khalifa arrives, slashes Markoulis’ face, and chases him away. In Luxor, Erica delivers Hamdi’s book to Tewfik and admits she saw the Seti statue, but Tewfik refuses to speak to her. Erica is surprised to find Khazzan waiting at her hotel, but learns he was raised by his uncle in Luxor, and has a home there. Khazzan offers to take her to the tombs of Tutankhamun and Seti in the Valley of the Kings, and, as they tour Seti’s tomb, he reveals he has a secret place in the valley where he always hid as a child. Later, they go horseback riding and sailing, and have a romantic dinner. He suggests that she return to Boston, fearing her situation is too dangerous. However, Erica chooses to stay, and spends the night with Khazzan. Meanwhile, Khalifa questions a clerk at Erica’s hotel, who mentions Tewfik’s shop. The next day, Erica searches for Sarwat Raman, the Egyptian foreman on Carter’s dig. Raman is dead, but Erica meets his widow, who denies the existence of the papyrus. After Erica leaves, Mrs. Raman secretly burns the papyrus, but Erica returns, stops her, and photographs the artifact. As Erica returns to her hotel, a boy gives her a message to meet Tewfik that evening. In her room, Erica translates the papyrus hieroglyphs, which contain an apology from Menephta for disturbing Tutankhamun’s tomb. When he ensures the eternal safety of Seti’s tomb, Erica realizes that Seti’s tomb lies beneath Tutankhamun’s. She leaves a message for Khazzan, saying she has important information and is meeting Tewfik. Downstairs, she sees Khalifa in the lobby, and is surprised by the arrival of Yvon, who apologizes for his actions in Cairo. Declaring she has made an important find, she forgives him and promises an exclusive interview if he helps her elude Khalifa. He agrees. Later, Khazzan arrives at Tewfik’s home and discovers his body, then rushes to the Valley of the Kings. Meanwhile, Erica arrives at her appointed rendezvous at the tombs, and a man named Muhammed leads her deep into the tunnels, supposedly to meet Tewfik, but pushes her into a dark room and locks the door. Erica digs her way into another chamber, full of corpses and bats, and crawls outside. She sneaks past a guard and, as she hides in a restroom, Erica discovers the secret passageway to Seti’s real tomb, where she finds hundreds of priceless artifacts. She goes back to her hotel to find Markoulis awaiting her return. He gives chase until they are captured by Yvon and his henchman, Khalifa. The thieves want the Seti statue, but Markoulis denies involvement in Hamdi’s death, and claims he was following Erica to find the statue. Yvon takes Erica into another room and questions her whereabouts that evening. She claims she met Tewfik, but Yvon knows it is a lie because he murdered the man. In the other room, Khalifa shoots Markoulis as he tries to escape, and, in the resulting confusion, Erica runs away. She steals a truck and they pursue her, but Erica forces their vehicle off the road and runs to Khazzan’s home. She tells him that Tutankhamun’s tomb was used as a decoy to protect Seti’s tomb, and Sarwat Raman’s family has been raiding it for decades. Muhammed arrives to kill Erica so that she will not ruin their family name, but Khazzan will not let his uncle shoot her. Yvon and Khalif arrive, and a gun battle ensues. Muhammed kills Khalif, then aims at Erica, forcing Khazzan to kill his uncle. Yvon wounds Khazzan, who then kills the journalist. As Khazzan speeds away in a boat, Erica realizes where his secret place is located, and rushes to the Valley of the Kings, where she finds him in Seti’s tomb. Khazzan admits his family has been stealing for years, but were too fearful to spend the money, and now the ruse is over. They profess their love for each other, and Erica begs him to run away with her. Badly wounded, Khazzan asks her to go ahead and see that the way is clear, then he knocks down the walls’ support beams, burying the tomb beneath rubble. Erica barely escapes, and rides out of the Valley of the Kings alone.