Since their mother's death, Carter and Sadie have become near strangers. While Sadie has lived in London, her brother has traveled with their father, Egyptologist Dr. Julius Kane. One night, Dr. Kane brings the siblings together for a research experiment at the museum to set things right for his family. Instead, he unleashes the Egyptian god Set, who banishes him to oblivion and forces the children to flee for their lives. To stop the evil deity,...

A group of children, entranced with the study of Egypt, play their own Egypt game, are visited by a secret oracle, become involved in a murder, and befriend the Professor before they move on to new interests, such as Gypsies.

When hackers target locations all over London, Kat leads the City Spies in testing security for the British Museum where a secret message leads them to Egypt and the ancient City of the Dead.

The Thea sisters have been invited to Egypt to participate in an archeological excavation searching for the lost Treasure of the Sun. However, they discover that theives are also after the lost treasure.