Versailles, 1672-1678. The Franco-Dutch war wages on, Louis XIV (George Blagden) confronts his bitter rival, Guillaume d'Orange. But danger threatens the kingdom, even so far as the court of Versailles into which a deadly poison seeps. Louis has completed the first stage of his plan: to build the most beautiful palace in Europe far away from Paris, locking the nobility inside it and exercising absolute control. But the King has created a new and dangerous civilisation where courtiers are ready to do anything to get to the Sun. Behind a veneer of etiquette, they dream of ascending the social ladder to a world of wealth and power. Morality is waning, the poison spreads... Versailles is crumbling faster than it is being built. Blinded by his affection for Madame de Montespan, Louis is deaf to the Church's injunctions. The greatest enemy standing before him is no longer the nobility, nor is it Guillaume d'Orange. The palace that he himself designed could become his worst enemy. Wavering between mysticism and obscurity, diving into the dark side of power, will the king's downward spiral yet see his return to the light?