Heron Dyke was an estate in Norfolk which was a property of Denison Family for over six hundred years, coming down from male heir to male heir. Old Gilbert Denison is approaching his seventieth birthday with a bad health and his only concern is to live until his birthday. With a couple of dangerous health related incidents and some very high interest at stake his grandson Hubert urges him to receive a very hazardous and risky medical treatment in order to keep an old Squire alive. With so many treachery and tribulations lurking around the Heron Dyke it remains to be seen who will come on top in this mysterious situation.