Throughout the series, the host and an accompanying adolescent doctor tour different British middle schools and use live full nude models to educate the students on sex education. Males and females from early puberty up through adulthood are shown fully nude. Closeups of all body parts are shown, including the penis and vulva. Foreskins are retracted and labia are spread to show the full anatomy. In one episode the anus's of different men and women are shown.