Last year of High School. Harry is a smart kid that skipped two grades ahead, which means that he's a sixteen-year-old in a class with eighteen-year-olds. Even if the subjects in school are more fun he's also that weird kid no one talks to. At least until their Biology teacher Mr. Graham pairs him with the popular kid, Louis Tomlinson in Sex ed. They're going to take care of a doll for a month to prepare themselves for parenthood, or mostly scare them enough to have responsible sex unless they want to be teen parents. Harry dreads the assignment, but then he gets to know Louis and maybe they're more alike than he thought?