Business is booming in Sabden, but with boggart flu on the horizon and criminals on the loose, can the villagers make it through another year in the treacle trade?
When all the Boggarts in Sabden are sick, Brendan's Scottish cousin, "Digger" comes over and brings his special recipe cure, porridge.
Now, Digger has taken up residence in Sabden, he must find a job. Silas is reluctant to employ him at first but Digger mentions he is not interested in any wages and just wants a roof over his head and plenty of unpaid work, much to Silas' delight. Unfortunately, Pendle causes a stir the next morning when he accidentally causes the Bubble and Boggart to blow up whilst hitting a pressure cooker full of porridge.
Rosie, Wizzle and Tapper help to fix the "Bubble and Boggart" whilst Lil takes refuge from Nellie Newchurch, but it isn't long until they're at each other's throats once again.
The Professor's changing formula liquid accidentally gets mixed in with a batch of Silas' black pudding ginger beer and soon nearly everybody except Rosie, Bert, The Prof and Brendan has changed their natural personalities. Can the Prof find a way to get them back to normal?
PC Nicko Pendle needs to have made 100 arrests by the end of the day to be promoted to sergeant. He soon finds excuses to arrest everybody in Sabden, and when there is no one else left, he even arrests himself! Unfortunately, there are some real criminals on the loose and they take advantage of having the empty village to themselves.
Barrow and Furness, the robbers on the loose, wire into Silas' telephone connection and trick Lil into thinking Furness is Silas and asks for a barrow full of treacle butties to be left by the mine. When the real Silas finds out, he realizes something is afoot and the villagers get their own back on the two villains.
Wizzle's treacle tracker finds a treasure chest buried in the moors. Inside the chest is a map claiming there is a golden nugget somewhere in the mine. Silas and the other villagers are soon on the trail, but so is Barrow and Furness...
When all the villagers except Digger, go away for the day on Bessie. Barrow and Furness take advantage of having the village all to themselves. But when they get back, the thieves find themselves in a rather sticky situation and so does PC Nicko Pendle...
Rosie and Wizzle use the Professor's new sound sponge to record all the sounds of Sabden.
When Nicko Pendle requests a form of transport from his stingy superior, Chief Inspector Foulridge. The double-dealing detective gives Nicko a rather humiliating gift, a pair of roller-blades!
Silas wants Tapper and Digger to dig a tunnel to France to export their treacle and so that French tourists can visit Sabden.
The villagers play against the boggarts in a football match. But those cheeky boggarts decide to play unfairly...
Silas asks Wizzle to build a statue of the person who has brought the most fame and fortune to Sabden. However, Silas is none too pleased when he sees who the statue Wizzle built is actually of!