In order to free his family from financial worries, Marc Duval (Gilles Lellouche), a Frenchman expatriated to Gibraltar, becomes a spy for French customs. From petty trafficking to shady cargo, he progressively wins the trust of Claudio Lanfredi (Riccardo Scamarcio), a powerful cocaine importer tied to the dangerous Columbian cartels. This in-depth immersion in the world of drug trafficking forces Marc to take increasing risks, but, as he rises in the cartel hierarchy, he also discovers easy money, temptation and a luxury lifestyle. Permanently living on a knife edge, only his lies keep him alive. When the English customs join the game to arrest Lanfredi, it becomes even more dangerous and Marc's family risks paying the ultimate price.