Jackie's rocky relationship with her mother worsens when she begins prosecuting one of her oldest friends for negligence in the workplace, setting in motion a horrifying chain of events that leave the Ashfordly officers with a murderer on the loose. Meanwhile, Vernon and David's latest enterprise of catering for pop concerts plunges the whole of Ashfordly into a blackout, whilst Ventress and Blaketon are wary of Gina and Bellamy's romance because romantic relations between a police officer and a licensee are illegal, putting Bellamy in a terrible predicament.

Mike's niece visits Aidensfield for the weekend, but he and Jackie soon have their work cut out when she and her friends sneak out on a late-night binge, which leaves more than one youngster in peril. Meanwhile, Vernon becomes a bodyguard for a Russian prince who is staying at Ashfordly Hall, and gets into trouble with Lord Ashfordly when he takes the prince to the pub. Elsewhere, Bellamy pulls out all the stops as he plans to ask Gina to marry him, but disaster strikes when he requires David's assistance, while Tricia Summerbee makes her mark at the village surgery.