The hunt for those responsible for the November 2015 attacks is putting the French secret services under great strain. Among them, Lucie, an experienced and determined DGSI anti-terrorist agent, fights to advance the investigation. She joins forces with Malika, a seasoned analyst from the DGSE. The limitless commitment of these anonymous heroes, ready to do anything to protect France from new attacks, will undermine their private lives and awaken deep scars.