Cleo argues with Tutenstein, accidentally summoning Hathor, the egyptian goddess of love. Tutenstein feels disrespected by humans and Hathor appears to be horrified by the mistreatment, turning into Sekhmet, a lioness deity. However, Cleo and Tutenstein learn that Hathor turned into Sekhmet not for Tutenstein, but to seek vengeance on mankind for the disrespect of Ra, the sun god. This story is based on an ancient egyptian myth.

Tutenstein comes to terms with modern society and its differences from the kingdom he ruled over. Tutenstein, Cleo, and Luxor are attacked by two demon warriors, who Tutenstein explains are the demonic servants of Set, the god of chaos. After temporarily defeating the demonic servants, Tutenstein concludes that a gate to the underworld must have opened with his awakening. While investigating the gate to the underworld, Tutenstein describes the history of Set, and how he murdered his own brother.

After a stranger summons a crocodile god, Ammut, to chase after Tutenstein, Cleo describes the process of the feather scale, which is part of the egyptian tradition when entering the afterlife. In this test, if Tutenstein has a pure heart, it allows him to pass the test, stopping Ammut. Tutenstein passes the test, which is supervised by other egyptian gods.

After causing trouble with two delinquents in the overworld, the egyptian gods Anubis and Thoth send Tutenstein to be punished in the Hall of Two Truths, a place in egyptian mythology where one's fate is decided. Cleo and Luxor come to the Hall of Two Truths to save Tutenstein, and Tutenstein realizes the two delinquents were not his true friends, and that true friends are sensible and loyal. After negotiation, the gods agree that Tutenstein should not be punished.

Cleo Carter, a middle school student, and her talking cat, Luxor, watch Tutenstein's awakening after lightning strikes the mummified body of Tut at a museum. Luxor explains how long Tut was buried for. After understanding his situation, Tutenstein describes how his life as Tut was cut short, and it is shown how his organs were stored in jars as part of his burial.