Moordale’s friskiest come together again - in more ways than one. Otis sports a ‘stache but hides a secret. Jean comes clean. A head teacher arrives.
With a new term, Moordale Secondary School welcomes Hope Haddon as its new head teacher, who promises to get the school back on track. Otis tries to keep casual sex with Ruby a secret, and discovers a "Sex King" is giving out fraudulent sex advice in the abandoned toilets. Jean promotes a book about her experiences teaching sex education at Moordale, and struggles to tell Jakob about her pregnancy. Eric and Adam go public with their relationship, though Adam has problems with people making fun of his sexuality.
Mr Groff, living with his rich, shallow brother, tries in vain to get a teaching job. While conducting a television interview, Hope is interrupted by a naked Dex. Otis and Maeve confront the Sex King. Ms Sands encourages Maeve to apply for a study programme in the United States. Ruby decides to no longer hide her relationship with Otis. Otis tips off Hope about the sex clinic, and Hope has the abandoned toilets demolished.