The border that divides the two completely opposite worlds from which the two policemen protagonists of the film come, who find themselves forced to work together to solve an intricate murder case that from the slums of the banlieue with its shady deals, leads them to shake the upper echelons of politics.
The French obviously have a very intelligent way of working on lucky formulas. In reality, even if in a genre context, we have a couple of very different people, a couple who work on very marked elements of comedy: Omar Sy started from this concept himself since its inception, led then arrived at the cinema but always with the constant of the couple at the antipodes, culturally, socially, professionally. In reality, the film tries to go beyond the most classic codes, playing with clichés to overcome them, letting us slowly discover the protagonists through a caricature of themselves that deconstructs these codes to arrive at something more human and personal. In the sense that, for example, Ousmane the ramshackle is actually more rigid, serious and conservative than it seems, moreover with a child to grow up in the midst of a thousand difficulties; while the formal and framed François is more brazen, incorrect and messed up than he wants us to believe at first. Moral, the two grow up and learn to solve their problems through each other's faults.
The two are rather funny and nice and there is a good feeling between them.
In the end we have an interesting hybrid even if not completely successful, mainly due to a few too many gaps in the script and a too hasty ending, which still leaves open the possibility of a sequel and perhaps the beginning of a new franchise. Director David Charhon, who comes from the world of advertising, made use of the collaboration of Alain Duplantier for photography and Ludovic Bource for music. The first action film specialist (Killer Elite), the second even Oscar winner for the comedy The Artist: to underline even more the mixture of the two genres desired by the director from the start.