Pat and the Reverend are accidentally locked in the vestry. While PC Selby and the others chase after Dr Gilbertson to retrieve the vestry key, Pat and Reverend Timms find a way to escape through an underground passage.

The Post has finally arrived after a week. Ajay bets Pat that he can't deliver all the post by teatime. The loser has to run around Greendale in their pyjamas.

Meanwhile the Children are attempting to break their own records when Mr. Pringle holds a maths lesson which involves breaking records for skipping, hopping on one leg, and catching a ball etc. Bill has been teasing Julian all day about his ability to do "keepsy-uppies". However Julian breaks the record and Bill apologises.

Pat manages to deliver the mail in time and wins the bet and Ajay has to run around the village..