Burdened by a dark family secret, Virginia Fortescue flees her oppressive home in New York City for the battlefields of World War I France. Driving an ambulance for the Red Cross, she meets a charismatic British army surgeon whose persistent charm opens her heart to the possibility of love. As the war rages, Virginia falls into a passionate affair with the dashing Captain Simon Fitzwilliam, only to discover that his past has its own dark secrets -- secrets that will damage their eventual marriage and propel her back across the Atlantic to the sister and father she'd left behind.