In Jerusalem exploring the ruins of the First Temple Nina Wilde spots an opening to a hidden chamber. Within it is a model of a mysterious city thought to contain a great yet dangerous power hidden by King Solomon himself. Analysing the clues Nina believes the city is located in the Democratic Republic of Congo one of the most dangerous locations on Earth. Eddie - in England with their daughter Macy - has had problems in the DRC in the past and isn't about to let Nina go there alone. Joining forces Nina and Eddie start a chain of events from which there might be no return...