Jeanne Vaubernier (Maïwenn) , an ambitious and socially aspiring commoner cleverly uses her beguiling charms to escape her humble circumstances. Her lover, the wealthy Count du Barry, who profits considerably from Jeanne's lucrative amorous adventures, wants to introduce her to the king. He arranges a meeting through the influential Duke de Richelieu (Pierre Richard). The meeting far exceeds his expectations: between Louis XV (Johnny Depp) and Jeanne not only ignites a passionate love at first sight, but a deep affection develops that is to last until death. With the enchanting courtesan at his side, the king finds the joy of life again - so much so that he can no longer be without her and decides to appoint her his official favorite. Jeanne moves against all rules of decency and etiquette to Versailles, where her arrival throws the entire court into turmoil.