Mathieu Girard is an agent from the Intervention Group of the National Gendarmerie, an elite French unit. He likes his work and, although he insists on denying it, feels attracted to risk, which causes him trouble in stable relationships. Responsible and thoughtful, affective situations are not his priority. On high alert against terrorist attacks in Paris, Mathieu must keep a close eye on Dmitry Zaitsev, a Russian entrepreneur. Implicated in seedy businesses, Dmitry claims he can prevent the Islamic extremists from acquiring a lethal weapons cache. And Mathieu will also meet Nadina. All signs warn him not to approach her, but when you love danger, that should not matter.