Walker's permanent replacement PC Wetherby arrives and it is time for PC Mason's transfer to the Met, but Mason is not so sure he wants to leave Aidensfield. Furthermore Wetherby soon makes himself unpopular among the villagers. Nurse Cassidy suspects that young Jimmy Masters gets beaten by his stepfather George Masters. Also the boy's real father Max Philpott returns from Rhodesia to see him, and there is a rough and tumble between him and Masters at the Aidensfield Arms. Gina and Oscar Blaketon organize a quiz show at the pub to collect 200 pounds for a new dialysis machine. Not surprisingly Peggy Armstrong tries to cheat and is far from happy to get caught.