Lt. Murtaw (Danny Glover) is a "by the book" cop and a great family man who is given a new partner that is more than anyone can handle. Neither cop knows how this unlikely partnership will pan out. His new partner Martin Riggs(Mel Gibson) is at the end of his rope after his wife's death and puts himself and everyone around him in danger. Riggs uses many unethical, yet effective, ways to track down the bad guys, while Murtaw is along for the insane ride. Will Murtaw handle this real life lethal weapon or is he just too old for this...?