Two sisters and one betrayal that will carry across generations. In wartime Cornwall, 1943, a story between two sisters begins - the story of Adele and Amelia, and the heart-breaking betrayal that will divide them forever. Decades later, the efforts of one reckless act still echo - but how long will it be until their past returns? Based around the tragic events of Exercise Tiger, a rehearsal for the Normandy landings on D-Day.