One of the founders of the Impressionist movement while also one of its most ruthless critics, too bohemian for the bourgeois and too bourgeois for the artists, Edgar Degas was a man of paradoxes. A loner, he only loved one woman without ever courting her, the American painter Mary Cassatt whom we follow closely as well. And it is in the company of the latter that at the twilight of his life, Efa and Rubio open the pages of Degas's notebooks to try to unravel the mystery of this genius steeped in contradictions.