Dan's teaching career is reduced to few words in his final school assembly and some parting gestures from his child nemesis and Mr Klackoff. With Jo in sole charge of organising a Skype-ably impressive party at her shop, Dan can surely relax knowing that this is all in safe hands. But with the usually unflappable Nesta wrong-footed by sinister 'Daddy', Mum taking a turn for the worse, as well as the revelation of a mysterious terror-inducing local and seismic news from America... will Dan's world turn completely upside-down in this series finale?