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.
Michel is a Belgian inventor. He cares for his father, a paralysed writer, is married to a Congolese woman and is the father of an interracial child whom he reassures as to his parentage. He discovers at the age of 41 that he was adopted, actually having been born in Sainte-Cécile, Quebec. In the summer of 2000, he travels to Quebec, supposedly to sell some of his inventions. While on a near-impossible quest to find his birth family in the town where he was born, he crosses paths with Louis Legros, son of another inventor, in a meeting which will change their lives.