Megan Montgomery's Easter holiday plans are disrupted when her father brings home Mr. Hemmlich, a potential client who is also an archaeologist to stay with them at the Parthenon, the manor where the Montgomery's live. Mr. Hemmlich brings with him Deidrich, his teenage son. Things look better for Megan, that is, until Hemmlich the elder begins asking suspicious questions about the manor and the eccentric and mysterious man who built the manor. When he discovers the Library of Athena, Megan and her friends find themselves trapped in another enchanted book, this time in Ancient Egypt, where the only way home is to follow the clues, complete the tasks, and find an artifact that once belonged to the Goddess Isis.