An old man who has one interest in life, collecting butterflies, has his life changed by an eight year old girl.

A talented art student named Angélique is passionately in love with Dr. Loïc Le Garrec, a handsome married man whom she believes will leave his wife. When he eventually decides to stay in his marriage, it causes Angélique to spiral. However, as the story shifts from Angélique's perspective to Loïc's, the surprising truth about their relationship is revealed.

The attractive Béatrice Laune has a brilliant career, recently crowned with the award for best advertising creativity of the year. A well-deserved reward, as Béatrice has devoted her entire life to her work. The only fly in the ointment is that, for some time now, the young woman has been fainting every time she is confronted with a baby! The medical diagnosis attributes these episodes to a repressed desire to have a child as she approaches her 40th birthday. This situation disturbs Béatrice to the point where she becomes fixated on one idea: having a baby for her 40th birthday!