Mark Thackeray, an engineer, takes a job teaching a rowdy class at an East End school, hoping it's a temporary gig. He introduces his own unique approach to discipline, emphasizing respect among students. As he gets to know the students, he finds himself entangled in their personal lives and must navigate the affections of a student while winning over the class troublemaker.

To Sir, with Love
A young engineer-trainee takes on a life-changing mentorship role, guiding a lively group of high school students from London's East End, and together they discover the importance of teamwork and determination.