This is a story of loss and love, covering one year in the lives of the Harrison family, a sprawling clan doing their best to hold together in the face of a changing world. Time is catching up with Pamela and John. And troubles are brewing in the lives of their children. The story opens as the Harrisons gather for Christmas at their big country house. Christmas has been a tight safe world of festivity and tradition but this year, reality is encroaching. And when tragedy strikes, of the most unforeseeable and devastating kind, they are torn apart. Harsh truths emerge, about the past as well as the present, laying bare the fragility of their happiness and all that they have taken for granted.