François Marin is a dedicated French teacher at a diverse inner-city middle school in Paris. He begins the school year with optimism, aiming to engage his multicultural class in meaningful education. The students, coming from various ethnic backgrounds, bring unique perspectives but also present significant challenges. Tensions slowly build as cultural conflicts and language barriers manifest, with some students resisting authority and questioning Marin's methods. Despite his efforts to maintain a constructive environment, misunderstandings and disrespectful behavior occasionally derail his attempts to foster mutual respect.

The evolving dynamics between Marin and his students reveal deeper issues within the educational system and society at large. Marin's patience is tested as he navigates sensitive topics and tries to inspire his students to rise above their circumstances. His genuine concern for their futures is palpable, but the obstacles he faces highlight the complexities of addressing social inequalities in a classroom setting. The interactions become a mirror of larger societal struggles, encapsulating the hopes, frustrations, and aspirations of both the teacher and his pupils. As the school year progresses, the narrative delves into the transformative power of education and the poignant reality of its limitations.