When her father dies, Louise de la Vallière - too poor for the convent and marriage - is sent from the provinces to the magnificent court of the Sun King at Versailles. The young Louis XIV is immediately fascinated by the intelligent and natural girl who can ride like a man. A deep, sincere love grows between the two. Louise becomes his secret confidante and mistress and the mother of his children. But Louise's influence on the king is a thorn in the side of many at court - above all the Marquise de Montespan. It is she who finally makes Louise the target of a vicious intrigue. And Louise knows that her standing at court and in the king's heart is no longer secure and her life is in danger.