The story is set in Alsace, France after it has been conquered by Germany. It describes the last French lesson taught by M. Hamel to his students. As the German authorities are replacing French with German in schools, this will be M. Hamel's last day teaching after 40 years. During the impactful last lesson, the students realize how important their French language and culture are and regret not having learned more earlier, as it is now being taken away from them. M. Hamel encourages the students to preserve their language and cultural identity despite the changes being imposed on them.