Born at the eleventh hour on the eleventh day of the eleventh month in 1918, Mary and Walter Tilford's baby daughter is named Thursday. It was meant to be a message of hope for the future - but they could not foresee that by the time Thursday celebrated her 21st birthday, Britain would once again be at war with Germany. Thursday is determined to help in the war effort and volunteers as a Red Cross Voluntary Aid Detachment nurse. She is attached to the Royal Navy and begins her service at Haslar Hospital on the shores of Portsmouth Harbour. The realities of war are brought home to her when the casualties begin to arrive from Dunkirk and Thursday begins to understand the true meaning of courage. While experiencing all the natural hopes and dreams of any young woman, finding pleasure and joy as well as sorrow in her work, Thursday is given her own opportunity to show strength and bravery in the face of war - and find a lasting love.