Comedy drama about John Croft (Neil Morrissey), a failed businessman who is heavily in debt when he finds a wallet which contains a map which he later finds could lead him to hidden treasure. He decides to search for the treasure alone, but Roland Blood (Jim Carter), a dealer in naval antiquities, is not far behind. Croft follows the clues on the map from a castle to a church to a seaside promotory and finds the spot where the treasure was buried is the site of a new beachside housing development. He tries to buy the house, but his bank manager does not look kindly on his proposal and his wife is about to discover that he re-mortgaged her home. He decides to take drastic action…

Life at the end of the line has always been tough. With the cost of living going up and pressure to cash in on their now quaint fishing cottage's financial potential, Biddy and Rob find themselves at the end of the line in more ways than one. However Biddy has a plan, Biddy has an idea, Biddy has a desire to paint. The question is will any of her work save them from financial ruin, and who at the end of the line will take notice?