Alfie Wickers (Whitehall), is a posh, newly graduated High School history teacher at the fictional Abbey Grove School, in Hertfordshire. Ever determined to impress his crush, Rosie Gulliver (Solemani), Alfie makes repeated efforts to appear "cool," such as coaching the school football team, organising a weapons amnesty and fielding a candidate for the school elections. Usually, in these efforts, he turns to his class (particularly Joe, the "teacher's pet"), despite their open disrespect and disgust for him, for help. At the same time, he finds himself having to deal with the shenanigans of his eccentric headmaster, Shaquille "Simon" Fraser (Horne) and meet the expectations of his deputy headmistress, Isobel Pickwell (Gomez).