After a family tragedy, three generations of the Deetz family return home to Winter River. Still haunted by Betelgeuse, Lydia's life is turned upside down when her teenage daughter, Astrid, accidentally opens the portal to the Afterlife.
The story of one of the greatest miscarriages of justice in British legal history, where hundreds of innocent sub-postmasters and postmistresses were wrongly accused of theft, fraud and false accounting due to a defective IT system.