The terror was over, and in France in 1794 the prison gates finally swung open. Having returned to her native Saint-Malo in Brittany, Laura Adams, aka Anna-Laura de Pontalec, dreams only of a new meeting with her lover, Baron de Batz, from the d'Artagnan family, who lost King Louis XVII, whom he saved, and that , as if to rescue the last prisoner from the Temple - the daughter of King Louis XVI, executed on the scaffold. In Paris, the Convention is living out its last days, and the game of love and death is becoming more cruel than ever. After Valmy's cannons, the Vendémière's cannonade shatters Laura's fate: now she alone must bear on her shoulders the burden of the last secret of the Bourbons, the secret of a woman without a name, who was nicknamed the Countess of Darkness...