Mazarin, using cunning diplomacy, negotiates a peace treaty with Spain in exchange for the marriage of the young Louis XIV with the Infanta Maria Theresa. But the future king is in love with the niece of the Cardinal, the young Marie Mancini. Suddenly we are all witness to the power games of Mazarin, Colbert (Minister of Finances), and the regent. But despite his young age, Louis has learned from his master and will not be easily manipulated.