PC Ventress has bought a building plot and wants to build a new home for him and Mrs. Ventress. He has hired Claude Greengrass and David Stockwell to do the digging at the plot. Suddenly they come across a 500 kg highly explosive leftover from World War II. And Greengrass gets trapped right alongside it. PC Rowan starts to evacuate the village while they wait for the bomb squad to dispose of it. To top it all little Colin Ellis has disappeared and is nowhere to be found when the school children and other villagers have been evacuated. During the search for him the police find a dead body at station master Hutton's house. Suddenly the bomb starts ticking!

There is a police charity soccer match between Ashfordly and Richmond, but PC Bellamy has to appear in court the same day and may not make it back in time although he is the Ashfordly coach. Albert Hallows helps Gina to sell tickets for the match, but not out of his good heart or to help a pretty girl. He is the head of a gang of old timer robbers and he plans to hit on Aidensfield during the match. David has been called for jury duty in the same case as Bellamy is to appear in. The accused is a friend of one of Aunt Peggy's acquaintances and she tries to influence him to vote for an acquittal. Not an easy position when the other eleven jurors are in favour of conviction.