Children's stop-frame animation. Postman Pat and his cat Jess deliver post to residents of Greendale, including Mrs Goggins the postmistress, Reverend Timms, PC Arthur Selby and Dr Sylvia Gilbertson. On the way to drop Julian off at school, PC Selby tells Pat he's leaving Greendale to join the police in Pencaster. Disappointed, Pat and Julian plan a party to let the policeman know how much everyone loves him. Is it enough to keep the Selbys in Greendale?