An accountant, presumed honest, inadvertently finds 7 million francs in his bag and decides to change his life.

The Castle of Olive Trees is the ancestral home of the "Laborie de Sauveterre". Located at "Châteauneuf-du-Pape", it holds many mysteries and legends. Like every summer "Estelle Laborie" goes there to take some time off. But this summer she take an important decision: run from Paris and stay here at the castle definitively. Little does she knows that her arrival will awake a lot of drama and secrets, beginning with this enigmatic "Pierre Séverin" who wants to demolish the castle to the ground, to make an amusement parc "Cigaleland". She will learn unfortunately that this "Pierre Séverin" is also knowned as "Marceau" the little boy of the steward of the castle when her father was the master of the domain. That steward also died in terrible circumstance. However Estelle decides to face this vengeance and save the castle with the aid of archaeologist "Raphaël Fauconnier"...

In a quiet corner of the English countryside, lives the Smith family. Their quietude is disturbed by the arrival of a beautiful young woman.

Joey Wellman, an American cartoonist from Cleveland now largely forgotten at home, visits France with his partner Lena to attend an exhibition in Paris about the comic strip (bande dessinée) which features his work. He also hopes to be reconciled with his daughter Elsie who has been a student in Paris for two years, in flight from the American culture of which she sees her father as a typical example. Elsie is naively infatuated with French literature, and is trying to secure an introduction to the brilliant university professor Christian Gauthier, an expert on Flaubert but also an enthusiast for comic books. The meeting of father and daughter goes badly, but Elsie is persuaded to join Joey and Lena for the weekend at the country house of Gauthier's mother, Isabelle. During a comic-themed masquerade party, all of the characters are made to reconsider their present and past relationships.