Juin 1789. Depuis près de dix ans, Laure-Adélaïde, Comtesse de Chabrillant, poursuit une liaison orageuse, ignorée de tous, avec Armand Gallois, simple bourgeois. Ils ont coutume de se retrouver dans un moulin caché dans les terres du château. Ce matin-là, Laure-Adélaïde galope vers le moulin, follement impatiente de rompre avec Armand dont elle a appris une nouvelle infidélité. Ce qu'elle fait impétueusement et le quitte à jamais ! Une fois de plus... Mais, aux histoires de coeurs, une autre histoire est en marche, la Révolution française.

1934. Philippe falls in love with Odile, a beautiful stranger, and decides to marry her, against the will of his parents. They would have preferred a more bourgeois bride, ideally from their own milieu: the paper industry in Angoulême. Isabelle, for instance, whom they have known since she was a child, would have been the perfect match. But Philippe sticks to his choice and marries Odile. At first the newly-weds are passionately in love, and the whole family looks forward to the birth of an heir for the Marcenat family. But in vain. Instead, Odile neglects her marriage and devotes herself to drawing, a gift she inherited from her father. Or is her rekindled interest in art classes more the result of her encounter with the charming but mysterious artist François Crozant? Philippe sense that he's losing his wife and becomes madly jealous of François. Meanwhile Isabelle, who's secretly in love with Philippe, is just waiting for the right moment.

Charlotte, an alienated sound engineer, travels to the country home where her mother was just murdered. She is quickly frustrated by the lack of progress in the police investigation and so begins her own. While listening to a fresh sound recording she made in her mother's house, Charlotte discovers a strange phenomenon, she can hear sounds from the past in her headphones. Soon she is using this ability to hear the past to piece together the last few days of her mother's life, drawing ever closer to discovering who killed her, even as the murderer returns to try and eliminate Charlotte before they are discovered.

Frederic is a young man in social rehabilitation. He has just found a night internship, in an isolated hotel in the mountains when, one evening, he sees his boss, Jacques, together with this son, hiding a car in the parking lot. The day after, he learns that one of the clients left the hotel without notice...