While he is lost in a pyramid while on a visit to Egypt, Gabe suddenly realizes that he is not alone, and he soon learns the meaning of the legendary curse of the mummy's tomb.
Jack and his younger sister take a trip in their tree house back to ancient Egypt, where they help a queen's mummy continue her voyage to the Next Life.
After learning about mummies in class, Katie decides to make one of her own, but when it suddenly goes missing, Katie and Pedro start following clues that they hope will lead them to the missing mummy.
To celebrate the newest exhibit the Coolsville Museum is hosting a party, but an uninvited guest shows up--the mummy from the cursed treasure wants his revenge.
Discusses events surrounding the tomb lid of an Egyptian princess purported to be cursed and the many people who died as a result of associating with it.