The existence of LÔea Olivier is turned upside when her parents announce that she will have to leave her hometown to settle with them and her big brother, Felix, in Montreal. Through chats and emails exchanged with her best Marilou's Thomas boyfriend and her "new friends", Lea tells us about the ups and downs of her adaptation to the big city: a brother too good and too popular, a stormy distance relationship and a gang that causes her trouble ... In short, the complicated life of Leah Oliver!