"The Substitute" is a 2015 TV series that follows a unique concept where a celebrity goes undercover as a substitute teacher in a struggling school. The show aims to highlight the challenges faced by students and educators while showcasing the impact of mentorship and support. Throughout the series, the celebrity interacts with students and teachers, gaining insight into their lives and the educational system. Each episode focuses on different issues, such as bullying and academic pressure, ultimately promoting positive change and inspiring both the participants and the audience.