To raise money for the new school roof, everyone in Greendale is swapping jobs for one day Alf finds himself giving a maths lesson at school, Ted Glen is put in charge of the station cafe, Nisha and Sara get into a bit of a pickle redecorating Dr Gilbertson's living room and the Reverend Timms has to look after a flock of sheep Thankfully, Pat - who's delivering the post as normal - is there to help when unfamiliar tasks get the better of the good folk of Greendale
