August 1910. Amelia Peabody and her husband, 簫Emerson, are relaxing at home in Kent. But adventure beckons when Major George Morley asks them to join an expedition to Palestine, where he is determined to unearth the legendary Ark of the Covenant. Always 簫skeptical, Emerson refuses until requests from the War 簫Office and Buckingham Palace persuade him to 簫reconsider by 簫insisting that Morley is a German agent intent on 簫stirring up trouble.
Amelia and Emerson follow Morley to Jerusalem and hope to reunite with their son, Ramses, working north of the holy city. But before they can meet, Ramses learns of a deadly plot, information he must pass on to his 簫parentsif he can get to them alive.