Nick investigates two mysterious barn fires that have happened recently. A young woman is also assaulted in a barn by her new boyfriend. The woman is persuaded by her friend, Sandra Murry (Alan Maskell's girlfriend) to report him to the police. It turns out that the woman's boyfriend is also the arsonist responsible for the barn fires. Meanwhile a local woman's horse keeps escaping from it's field and Nick is concerned that it will cause an accident. Kate has another argument with Ferrenby when she puts the unmarried Sandra Murry in touch with the family planning Clinic over birth control. And Greengrass gives Nick a tip-off about a poaching gang and when to catch them. The police organize an operation to catch the poachers, they catch a couple, only later to hear from Lord Ashfordly that a bigger gang cleared the river of fish further along.

Barry's wife, Sophie isn't well so when she takes the car out she nearly runs down Claude then crashes in to the bus shelter nearly hitting some children. Sophie is confused, and later accidentally walks out of a shop with out paying. Sophie is suffering and eventually asks Barry to end her life by setting fire to their home. And later Nick discovers that is exactly what he did. Nick vaguely understand his motives after seeing Kate suffer but he realises its complicated. Gina and George have a go at pigeon racing and a father who has kidnapped his daughter arrives at the pub.

Blaketon receives complaints about rock music being broadcast from a pirate radio station. Nick and Phil who have been enjoying the music, reluctantly seek out the station which is broadcasting from a ship at sea. But they are pleased to discover it is out past the 3 mile limit. Nick, Gina, Phil and Maggie go to a club one night where Maggie's brother is working as a DJ, he is also the DJ on the pirate radio ship. Things take a different turn when Maggie's brother discovers that some of the people he's working with are distributing LSD. Joe Norten is back in Aidensfield after doing time for arson, but he is doing his best to go straight. His friends however tempt him into trying the LSD which makes him fall off a building to his death. Nick goes undercover as a DJ to investigate. The ship moves back into the 3 mile limit and the dealers are caught, but Nick lets the pirate radio continue! Blaketon is annoyed when the evidence he had against Greengrass for making whisky goes up in smoke

A wrestling match is the up coming event and everyone is excited about seeing the ‘Masked Marvel' in action. But he's staying with Claude, and Alfred takes exception to his mask and bites him in the leg. A local rugby player wrestles in his place - the Masked Marvel's manager is thrilled that no one noticed the difference with the mask on. He then realises there's no limit to the amount of times he can interchange players. The original ‘Masked Marvel' is upset about being replaced and decides to do something about it. He ends up coming out on top when he wrestles without the mask A mother leaves her children and husband to move in with another man, her son takes it very badly. Later she is found dead alongside a road, and suspicion falls on the husband.