After many years of confrontation, the treasures of Spain and France are empty. In 1721, the regent of France draws up an ambitious plan to inaugurate an era of peace and prosperity that will heal the economies of both nations: his intention is to build a solid network of marriage alliances that will involve four children of very different ages who know nothing of betrayals and power games…

Year 1763, the Seven Years' War is about to end. August III, Elector of Saxony and King of Poland, has died, leaving empty the royal treasury and an extraordinary collection of paintings, sculptures, jewelry and goldsmith masterpieces, which he considered a symbol of his greatness, and that of Dresden, one of the European capitals of Baroque art.