In the sweeping saga The Discovery, British Second Lieutenant Clive Duncan marries his sweetheart Megan Davis in Richmond, just before he embarks to France during World War I. Clive becomes a prisoner at a notorious German POW camp, while back home Megan, along with her sister Vanessa, volunteer to help badly wounded soldiers at Megan and Clive's house. Concerned that Clive is dead, Megan becomes a registered nurse and serves just behind the lines. Clive survives the POW camp and returns home. Time passes, Clive and Megan move into new house, and Clive serves in World War II, earning many honors and medals. After the war, Clive and Megan begin to settle in and enjoy life, but when an officer from Scotland Yard arrives at their door one day to question them about a horrid discovery at their old house, their happiness is threatened. Will Clive and Megan be able to unearth the terrible secret behind what was found?