Mathieu Roussel is a novelist who knew a big success when he was young and who since then, for lack of inspiration, moved into unauthorized biographies which he writes under a pen name. Taken in the game of this new life, he infiltrates Lena Weber's intimacy, an icon of the media with a prestigious reporter past, who presents the first television news of France. Using his previous relation with Lena's daughter to approach her, Mathieu does not suspect that by trapping them, he is going to trap himself. Meanwhile, in Brittany, a 20-year-old young boy, Bruno, who lives with his parents, does not yet know the consequences that this story will have on his life.