1915. After the recent dramatic events at the Post Office's Home Depot Milly Woods is looking forward to spending as much time as possible with her best friends Beth and Nora. With Christmas fast approaching their job of getting millions of letters and parcels to the troops on the front line is more important than ever. However when Milly is moved to a different department she and the girls struggle to find time to spend together. Feeling more and more lonely Milly finds company and common ground at her local suffragette group. But soon Milly discovers that her new friends might not be what they seem. As she is drawn into a deadly plan that could affect the outcome of the war can her old friends help her get back on track and scupper the plan in time for Christmas?
