The TV series "Countess de Monsoro" is an adaptation of Alexandre Dumas' historical novel. The story takes place during the rebellious year of 1578, with King Henry III on the throne of France, but his rights are challenged by his own brother, the Duke of Anjou, who is supported by many noble and respected people in the country. The brave de Bussy stands alone against a group of four royal musketeers and sustains a dangerous injury. He regains consciousness in the chambers of the mysterious beauty Diana, who forever captures his heart.