Two men on a motorbike steal a bread van. The most likely suspects are the Mottram brothers who own a motorbike like the one used by the thieves. Later a similar motorbike is used in a break-in at Bernie's garage. Sergeant Miller gets a visit from his old army captain, Mac MacKenzie. MacKenzie wants Miller to join him in a new venture, teaching ordinary people survival techniques. PC Bellamy has a lot on his mind now that Debbie is away for treatment for her alcoholism. But he needs someone to take care of the children during the day, and while Peter is safe with Gina he has no one look after the girls. Aunt Peggy boasts about how she and David could give them a proper day out, and suddenly she is stuck with them. Gina agrees to pose for Jack Hollins - in the nude!