Twenty years after he left the World War I battlefields of France, Australian Joe Parker thinks he has tamed all his demons. His American wife Sophie, a wartime nurse, thinks she knows all his secrets. He hasn't. She doesn't. July 1939. Sophie and Joe are looking forward to a long-delayed honeymoon in France before they sail home to Sydney. But visiting the site of a battle where Joe fought twenty years earlier wreaks havoc with their itinerary and their marriage. When they arrive at Villers-Bretonneux, the location of Joe's most brutal battle, his long-buried memories erupt, including the ones he never told Sophie. And an impromptu trip to the French Alps only makes things worse when they discover German war artifacts on pristine alpine trails and the walls of the miles-deep Chamonix valley close in on him like the deepest trench he ever experienced. All the defenses he uses to hold his memories at bay start crumbling as the world teeters on the brink of a second world war. Bonds of friendship and shared experience helped them survive the Great War, but Sophie begins to doubt how well she really knows her husband when the foundations of their relationship seem to shift out of control. Can their marriage survive? Or will Joe's need to keep his secrets break both their hearts? Join Sophie and Joe on their journey of love and loss, secrets and redemption, from Paris and the Somme battlefields, to Australia, and back again via the French Alps.