The plot is an original script written by Ilya Tilkin who studied museum archives and diaries of the participants in the Stalingrad Battle before she wrote and finished her script. Original meant there were no novelistic sources used for the entire picture’s play-script.
The movie’s story revolves around German troops trying to take down a Stalingrad (Current name is Volgograd) residential building that was doggedly held out by a band of few Russian soldiers with a sole surviving female resident.
The plot line is based on the legends surrounding the Pavlov’s House, so named as it was a fortified apartment edifice which Russian Sergeant Yakov Pavlov along with his platoon who occupied the building defended during the Battle of Stalingrad.
The Russians get it 10 OCT, but any story derived from the story of Pavlov's house needs a showing here.