England, 1941. As nurse Jo Brooks arrives at Mill Road Hospital, a ward takes a direct hit from a bomb. Pulling herself from the rubble, Jo's first priority must be her patients... but she can't stop herself frantically searching for her friend Moira. When she eventually finds her, Moira is barely clinging to life. Jo makes a solemn vow: she will do whatever it takes to help the Allies win the war, even if it means sacrificing her own safety. But when Jo makes the acquaintance of a handsome American soldier, she feels her heart skip a beat, and all her promises are put to the test. Because sacrificing everything is so much more difficult when suddenly you have so very much to live for...