Archetypal buddy cops Riggs and Murtaugh are back for another round of high-stakes action, this time setting their collective sights on bringing down a former Los Angeles police lieutenant turned black market weapons dealer. Lorna Cole joins as the beautiful yet hardnosed internal affairs sergeant who catches Riggs's eye. Martin Riggs and Roger Murtaugh pursue a former LAPD officer who uses his knowledge of police procedure and policies to steal and sell confiscated guns and ammunition to local street gangs.