Paris, 1899. Pierre-Louis is a young and talented photographer for whom his models are a genuine obsession. Amongst them sits the sultry Countess of Castiglione, his long-standing muse. When entrusted with shooting a last portrait of her, he sees the perfect opportunity to dare to enter into a new game of seduction, that he is almost convinced he will, at last, win. Greeted by the housekeeper of the divine aristocrat’s mansion, and under the prying eye of her butler, the session will prove to be more disturbing than expected.