Constantinople, 1418: Two children play on one of the seven hills of the Imperial city, in the shadow of an impending war. Constantinos Palaiologos is the eighth child of Emperor Manuel II Palaiologos and Helena Dragatsis, with the sword of Destiny already casting its shadow over his life. Always by his side, a Serbian slave girl, raised in the Palace of the Blachernae, has just discovered with terror her true nature, a legacy from the women of her generation.

Paris, today. A Greek doctoral candidate, marked by a family tragedy, struggles to take control of her life again. Following her own unique destiny, she travels to Serbia, to the eerie monasteries of Fruska Gora, searching for the traces of the last defender of Constantinople. The research will lead her to the dark paths of Medieval History, where beliefs meet truth.

An ancient secret and a paradoxical shared fate bind the two women with the man who remained alive in collective memory and folk legends as the Marble King...