In 1940, Andre "Dedee" de Jongh, a twenty-four-year-old Belgian nurse, is horrified by her country's quick surrender to Nazi Germany. Every week she observes Germans inspecting the infirmary for injured Allied soldiers to ship off to work camps. Every day she witnesses new atrocities in the streets, such as Jewish countrymen being brutally beaten.
Outraged at the injustice, Dedee devises a strategy with her father to aid in the resistance effort against the Germans. They hatch a plan to help downed Royal Air Force fliers escape Belgium and France and return to England, where they can rejoin the fight. It's a dangerous endeavor and guaranteed death sentence if they're caught, but Dedee is determined to do her part to defeat the enemy.
Over time, the secret organization becomes one of the most successful wartime escape lines, saving more than eight hundred Allied fliers. Dedee manages to outwit the Nazis for a time, but with German soldiers hunting for the group and its leaders at every turn, will she be able to escape with her life?
Based on true events, The Postwoman recounts the gripping story of one woman's courageous actions and sacrifices in the face of great peril.