PC Bradley and PC Ventress are forced off the road by a blue lorry. They locate the lorry at the house of Tom Lowson, his new bride Mandy and teenage daughter Sandra. PC Ventress, who is acting sergeant in Craddock's absence, is convinced that Lowson is up to something, because he was the biggest black marketer in the North Riding area during the war. To prove it he orders his colleagues to inspect Lowson's lorries whenever they get the chance. Meanwhile Sandra is having a bad influence on her friend Alison Hartley, who is certain that she is pregnant. Sandra arranges for Alison to have an abortion, but the girls are late for the appointment and steal nurse Bolton's Land Rover. Faith Trueman is ill and ask her friend Greengrass to sell a valuable Georgian clock and other stuff for her so that can stay at the same hotel, where she and her late husband spent their honeymoon, once more before she dies. Only the stuff is not nearly as valuable as expected.

Anthony Mottram lives with his dominant mother, but the quiet bachelor has his sights on a beautiful woman called Sandra and to afford dating her he is selling off four old maps from his late father's collection to Greengrass without his mother's knowledge. Oscar Blaketon is not pleased to find out that Ray Nixon, an old acquaintance of both him and the police, has checked in at the Aidensfield Arms. When Blaketon was still sergeant he promised Nixon a reduced sentence if he would turn queen's evidence against his accomplices in a robbery, but the judge saw it otherwise and gave Nixon a full sentence. Blaketon thinks Nixon will be out for revenge, but Nixon says his only in Aidensfield because of his old girlfriend Wendy.

Gina still has second thoughts about marrying Phil Bellamy, because it means she will have to give up the Aidensfield Arms due to an outdated police regulation, and she goes to back Liverpool to think things over. PC Crane is investigating a strange break-in at old William Barraclough's farm. Nothing was taken, but a statuette was left on a table, and a shop owner says he bought it himself. Barraclough also gets a shipment of cement he has not ordered. Is he getting senile or does somebody wish to make it appear so? Vernon Scripps has been summoned for jury service. He grows impatient when everybody else is chosen before him and leaves, because he has other important things to do as well. He has left David with a thorough list of what to do in his absence.

PC Crane and PC Bellamy give chase to a couple of hooligans in a car. When they pass the bus stop in Aidensfield Paul Dibley is teased by a school friend and runs right smack into the side of Bellamy's passing police car. He suffers only a broken leg and some bruises, but his father Don wants PC Bellamy prosecuted. Paul's sister Tracey has just started as a maid at Ashfordly Hall when it is discovered that she is pregnant. Understandably she is afraid to tell her father especially since the father of the baby is her cousin Lenny. To make things worse Tracey gets a crush on PC Crane and names him as the father instead when her parents find out about her pregnancy.