A printing house worker and union leader inherits EUR100m, but the windfall costs him his job and puts his marriage at risk.

Léna, a 28-year-old community manager, has just joined the Paris Police Headquarter's communications department that is seeking to update its image. At the same time, a serial killer is on the loose in the capital.

1750, Louis XV reigns over France. The Marquis des Arcis, an assumed libertine, falls in love with Madame de La Pommeraye, an attractive widow withdrawn from the world. She resists him for years, and finally gives in to her secret desire.

1809, France. Captain Neuville is called to the front, leaving his future bride heartbroken. Her sister decides to write letters on his behalf to cheer her up. But it all goes south when Neuville reappears.