Violette and Arnaud, 17-year-old high school students inseparable since the 7th grade, have a relationship that is constantly intensifying. They love each other. Life is beautiful... Violette, very active on the web, runs a literary forum and a blog where she expresses her passion for writing. But, after a party in Paris organized by the members of the forum, she is not the same anymore. Arnaud, who was not present at the party, is worried and wants to understand. What happened that night? And why can't she remember it?