In Paris's 10th arrondissement - the Turkish district - two police officers are trying to solve the mystery of the atrocious torture and murder of three clandestine Turkish women workers. As they investigate, they discover that the 'Grey Wolves', a ruthless group of Turkish mafia members, might be responsible for these extraordinarily brutal killings. Simultaneously, Anna Heymes, who is suffering from amnesia and terrifying hallucinations, finds out that she used to be closely linked to the Grey Wolves. As her past becomes clearer, she has no choice but to face an astonishing and horrible truth.