Le Bureau des Légendes plot
Within the French secret service, known as the DGSE (Direction Générale de la Sécurité Extérieure), a clandestine branch of undercover agents operates. Under false identities, they are sent to countries that have a hostile relationship with France. Their mission is to search for individuals who may be recruited as informants. These agents, who are not allowed to be traceable in any way, are called 'legends'. They play an important role in the French intelligence services. Their lives are remotely coordinated by the Bureau des Légendes.