Terry Ainsworth is more interested in train spotting than going to school, and he is happy when his father Eddie takes him on a train ride. Little does the boy know that his father, who is fresh out of jail, is planning to steal a lot of fur coats and he wants to check out the railway line for the best spot to do it. It does not matter to him that his wife Molly is working at the company which produces the fur coats. Greengrass is doing some gardening for Mr. and Mrs. Dobson when he finds some old, Roman coins. Convinced there are more where they came from he rents an excavator to do some serious digging for them while the Dobsons are away for a couple of days.

The retired school teacher Celia Hanson has bought a cottage in Aidensfield. But she does not get along with her neighbour Don Foster, who does nothing but intimidate her on purpose, she claims. It peaks when his tractor rolls into her car after he threatened to drive straight through it. Furthermore rumour has it that Foster has killed his wife, who disappeared suddenly a few years earlier. Frank Jarvis suggests to Greengrass that he lend him a field to dump waste, but Greengrass will not settle for percentages only if he can be in charge himself and he decides to go into business himself. When he and David collect the first load David finds a live grenade, which he likes so much he decides to keep it for himself as a special treasure.

The honeymoon is over for Rob and Helen Walker. A car with an unconscious man in it is found in a ditch at Long Lane. And somebody has stolen all the sheep from Len Hallett's farm. Since it happened only a few hundred yards apart PC Walker suspects that the two cases are connected and that the unconscious man, Frank Mirfield, may have seen something he should not. Terry Parsons' grandmother has become senile dementia, and Dr. Walker suggests that they lock her in to keep her from wandering off, but the next morning the old lady has disappeared. Norman and Kath Harrison have bought a farm and necessity forces them to live off the land and Aunt Peggy decides to become self-sufficient too, but that idea really stinks.