Sam is a single mother and a middle-school French teacher. She is much appreciated by her students for her honesty and her opinions, which don't always conform to political norms, but her behavior leads to much recrimination and outrage from parents... As for her personal life, it's far from simple. Sam finds it difficult to bring up his own children, and the unexpected arrival of his mother, after two decades of absence, as well as an unexpected reunion with his first love, will turn everything upside down...