For David, everything is going perfectly: he is popular, the top scorer of his soccer team, and even getting closer to his crush. The fact that he posts embarrassing photos of classmates on Facebook doesn't diminish his popularity. But then the tide turns: the mysterious "Schillergirl" spreads bold lies about him online, turning more and more classmates against him. A campaign of unprecedented scale begins. In his investigations, David realizes that he has given quite a few people good reasons to hate him. Judith Le Huray raises fundamental questions in her story that every teenager must answer for themselves today: What do I reveal about myself online? How far will I go for a few "likes" on Facebook? Why is a compromising photo on the internet something completely different from a personal insult in the classroom?.