Aurelie Laflamme feels alone in the world, especially since her father's death five years ago. What if her father had been an alien who left Earth to return to his own planet? In that case, Aurelie would be an alien too. That would explain many things such as why she feels different from others, especially her mother, why she can't string two words together without making a mistake, and why boys really get on her nerves. Through the pages of her diary, Aurelie confides her joys and sorrows, successes and failures, love and friendships, and tries to find her place.

Aurélie Laflamme is in fifth grade and is preparing for her prom, which she imagines will be wonderful. Surrounded by her best friend Kat, her lover Nicolas Dubuc and her best friend Tommy Durocher, Aurélie will have to face heartbreaking choices about her future and who she really wants to be. An uncompromising professor will come to confront her in her academic and professional choices. MEANWHILE, her mother, who now has a new lover, seems distant and emotional. Aurélie will have to try to understand and find a place for herself in this world which sometimes seems thankless to her.