When he accidentally trips over a grave Stan Summer lands in the middle of a century-old feud between two rival ghost families, and finds himself cast in the role of peacemaker.

When the local museum hosts the exhibit for the mummy of Egyptian king, Tuturtikum, Malcolm and Dandy want to be the first in line. But they soon learn there is more to the mummy than just a wad of rotting rags. They've both become victims of the Tuturtikum curse! It seems the only way to zap the curse is to zap the ghost of Tuturtikum. But can the curse be lifted or will they be jinxed for life?

Maximilian is still trying to use his borrowed time machine to get to a meeting between Farmer Tanner and a developer, but instead he finds himself watching President Abraham Lincoln deliver the Gettysburg Address in November 1863.