The investigation into a series of terrorist attacks at Moscow train stations has reached a dead end. The only lead the investigation has to the Order of Set leads to the Cairo Museum. Margarita Romanova, whose father investigated terrorist attacks by the FSB and fell at the hands of fanatics, together with his colleagues have to go on a dangerous journey through Egypt to find a place previously considered a legend. Ombos, the ancient “golden city”, where the main cell of an ominous cult is hiding. However, fanatical sectarians do not intend to give up so easily and are declaring a bloody hunt for daredevils. Will Margarita and her companions be able to overcome all the dangers on the way to Ombos, stay alive and finally... still find the truth?..