In France, terrorist groups and intelligence agencies battle in a merciless war everyday, in the name of radically opposed ideologies. Yet, terrorist and secret agents lead almost the same lives. Condemned to secrecy, these masters of manipulation follow the same methods. Alex and Al Barad are two of them. The former is the head of the D.G.S.E.'s (Direction Générale de la Sécurité Extérieure, the French equivalent of the CIA or the MI6) counter-terrorism unit while the latter reigns over a terrorist network, and both fight using the most ruthless of weapons: human beings.

Reda, summoned to accompany his father on a pilgrimage to Mecca, complies reluctantly - as he preparing for his baccalaureat and, even more important, has a secret love relationship. The trip across Europe in a broken-down car is also the departure of his father: upon arrival in Mecca, both Reda and his father are not the characters they were at the start of the movie. Avoiding the hackneyed theme of the return to the homeland, the film uses the departure to renew a connection between two generation.

Serial killer Guy Georges' hunt by a female captain who created a DNA database that revolutionized the police methods.