Inspired by a classic horror film, Mrs. Snodgrass builds an exact replica of Egyptian tomb and brings it to class. Lydia mocks the movie, claiming it is just a story and has no basis in fact. Earl, a big fan of the film becomes so enraged he Morphs the school into an Egyptian tomb. The gang has to find their way out of the maze of corridors to stop Earl and return the school back to normal. But when Lydia takes a scarab from the tomb of the Mummy, it sets in motion "the curse of Pharaoh Phinster" Marcus, also a big fan of the movie, knows what to expect at every turn because events occur exactly as in the movie. Lydia, however, doesn't believe anything that isn't documented in her reference book about Egypt. Each person has to listen to the others' views before they are sealed up in the tomb forever.