In 1972, Karl Lagerfeld is 38 and not yet wearing his iconic hairstyle. He is a ready-to-wear designer, unknown to the general public. While he meets and falls in love with the sultry Jacques de Bascher, an ambitious and troubling young dandy, the most mysterious of fashion designers dares to take on his friend (and rival) Yves Saint Laurent, a genius of haute couture backed by the redoubtable businessman Pierre Bergé.Becoming Karl Lagerfeld plunges us into the heart of the 70s, in Paris, Monaco and Rome, to follow the formidable blossoming of this complex and iconic personality of Parisian couture, already driven by the ambition to become the Emperor of fashion.Between glamour and clashes of egos, grandiose parties and destructive passions, discover the story of Karl before Lagerfeld.