The Mirror of Isis whisks our heroes back to Ancient Egypt, where Tut discovers things weren't quite as perfect as he remembered them. Meanwhile, Cleo is led on a wild goose chase for her missing father by Set and his minions.

Tut wants to do too much at once, so he divides up his body to let his separate pieces enjoy different activities all at the same time. Set orders a hippo demon to hide Tut's pieces, just as Set did to his own brother Osiris in real Egyptian mythology.

Fed up with being short, Tut unleashes a spell to increase his size but, when it backfires, Tut first becomes a giant and then dangerously small. Tut learns to accept who he is - just because his height is small doesn't mean he's lacking.

Tut's tendency to be blunt insults the Ancient Egyptian gods, who cut him off from their protection and his own powers, and leave him vulnerable to the evil serpent Apep.

Tut gets a pet snake named Fang to keep him company and help him sleep. But the snake becomes possessed by Denwen, a demon snake god, sent by Set to steal the Scepter of Was. When Cleo becomes suspicious, Denwen tries to turn Tut against her.

Cleo plans an all-girls slumber party and she doesn't invite Tut. Tut can't stand being left out and decides to crash the party. When Cleo dresses Tut up like a girl, to sneak him in, Tut ends up humiliated and storms off vowing to throw a rival all-boy party.

Set uses his scorpion minion to possess Dr. Vanderwheele into discrediting Tut's Pharaoh title. Cleo struggles to support her friend Tut and find a way to prove his identity, despite having doubts herself about his validity as Pharaoh.

Tut neglects the Scepter of Was and misplaces it. Unfortunately, Walter finds it, and thinks it's a promotional toy, leaving Walter fair game for an attack by Set and his demons.

Tut becomes jealous of Cleo's life beyond the museum and Cleo's new friend Kara. He decides that spying on them is the obvious answer to his problems of feeling left out and enlists "the wandering eye" to spy on Cleo.

Tut's desire to be human again leads him to carelessly cast a spell without giving thought to the entire process. The spell backfires, bringing a T-Rex skeleton back to flesh-and-blood life, and giving Set a chance to possess the Scepter of Was.

Tut wants to be a great military leader like his father, but when he brings two museum statues of Viking warriors to life to do battle with him, Tut finds that it's harder to emulate his father than he thought it would be.

Cleo really wants to be liked by Jake, but involving Tut in her problem only leads to chaos, as Tut orders the goddess Hathor to cast a love spell on Cleo and make her irresistible... with disastrous results.

Tut tries to prove he is fearless by taking on more and more dangerous tasks until he descends into the Underworld where he finds more fearsome danger than he bargained for.