The Guard(2011)

Sergeant Gerry Boyle is an eccentric small-town cop with a confrontational and crass personality and a subversive sense of humor. A longtime policeman in County Galway, Boyle is a maverick with his own moral code. He has seen enough of the world to know there isn't much to it and has had plenty of time to think about it. When a fellow police officer disappears and Boyle's small town becomes key to a large drug trafficking investigation, he is forced to at least feign interest when dealing with the humorless FBI agent Wendell Everett assigned to the case. Left to run his territory to his liking for many years, he is not at all impressed when the FBI comes to town. Everett looks down on Boyle as a low-level provincial policeman with a limited and flippant view of the world; Boyle sees Everett as a by-the-book policeman with a chip on his shoulder and no understanding of how the real world runs. Despite the fact that Boyle seems more interested in mocking and undermining Everett than in actively working to solve the case, Boyle finds that circumstances keep pulling him back into the thick of it. As unconventional as Boyle is, these events unwittingly offend his murky moral code. He realizes that he needs to take matters into his own hands, and that Everett is the only person he can trust. And so the scene is set for an unlikely friendship and explosive finale.