The story of the Flaxton Boys protagonists of Yorkshire Television's long-running and fondly remembered children's adventure series moves on to a third generation, as this series finds the two young friends encountering further mystery and peril in and around the fictional West Riding village of Carliston.

It is now 1928. Jacklin Flaxton has been killed in the Great War, leaving his widow Jane to run Flaxton Hall. Arriving home from boarding school for the summer holidays, their son Jonathan, accompanied by his friend, William, learns that the vicar plans to convert the now-derelict Stilgoe Lodge into an orphanage. But while the boys are happy to help, a series of apparent hauntings forces several workmen to flee the Lodge in terror...