Martin Riggs finally meets his match in the form of Lorna Cole, a beautiful
but tough policewoman. Together with Roger Murtaugh, his partner, the three
attempt to expose a crooked formed policeman and his huge arms racket. The
crooked cop (Jack Travis) thwarts them at every turn, mainly by killing anyone
who is about to talk, but Murtaugh has personal problems of his own as his
family are brought into the equation.