Martin Riggs is no ordinary cop. He's a Mad Max gone maniacal, a man whose killing expertise and suicidal recklessness make him a Lethal Weapon to anyone he works against. Or with.
Roger Murtaugh is an easy-going homicide detective with a loving family, a big house and a pension he doesn't want to lose. Imagine Murtaugh's shock when he learns his new partner is a guy with nothing left to lose: wild-eyed, burnt-out Martin Riggs.