Wounded during a clandestine operation in Niger, Mata, an operative in the DGSE's action division, loses track of Antoine, her partner captured on the ground. Upon her return, she is assigned to the Domestic Counterintelligence Service and takes on a counter-espionage mission in the Alps: a shadow seems to connect this case to the ambush in Africa. Convinced that her superiors are withholding information and haunted by Antoine's captivity, she launches into a race against time, outside any official framework… at the risk of losing everything.