WW2,in occupied Brittany:a military German woman comes to visit her husband ,a Kommandatur officer .She is billeted on a local inhabitant ,a widow ,whose son is part of the resistance fighters .What will happen next? French resistant Charles and German Erika fall in love with each other ,but their affair is already doomed ,and they will share one single night together while the Germans are enjoying a Christmas Réveillon at the German military command.