In the mining basin of the north of France, Audrey conducts paranormal investigations in private homes and on brownfield sites. By exercising this passion she perceives clues, signs: something happened in this region, something that started underground ...
Here the mine is finished, but it is still there: the heaps, the headings, the corons and the war memorials occupy as far as the eye can see the landscape. But the young woman can not be satisfied with looking at vestiges; she wants to understand this past life. Why did not anyone ever tell him?
Every day, in the middle of the immense hypermarket in which she works, Audrey thinks about these abandoned and condemned galleries, those who have worked there. She decides to delve into this dark past, and see if, using the paranormal, someone or something is still there to answer her questions.