1944. Emilia, now happily married to Perry Bosweld and expecting his child, worries about her son Will in the RAF. And Ben Harvey is horrified when he's suddenly faced with the daughter he'd turned his back on. Emilia and Ben hurl painful truths at each other, but Ben takes it the hardest, and disappears when he is approached to act as a Special Operative Executive behind enemy-occupied lines in France. At the same time as the war puts their loved-ones' lives in danger, secrets from the past continue to threaten to overwhelm the Harveys. But, as ever, new arrivals to Cornwall and fresh passions act as dramatically unpredictable catalysts in the family's chemistry ...