A man tortured and executed in a hovel somewhere in Morocco. Two teenagers murdered in their room at the Necker Hospital in Paris. A horde of traffickers on the roads of Spain and the south of France in a bloody go-fast. Three cases linked by a terrible plot that the cops of the criminal brigade of the ‘36’ in Paris will have to thwart, led by the methodical police commander Richard CROSS and those of the Drug Unit of the Toulouse Judiciary Police branch led by Captain Sara BELLAÏCHE, a young, hot-headed policewoman with unorthodox practices. Two services with diametrically opposed methods that will be forced to collaborate in order to stop the escape of a gang of unscrupulous thugs led by Edouardo GARCIA, a fearsome killer in the service of the Mexican Sinaloa cartel...