Two newly paired cops who are complete opposites must put aside their differences in order to catch a gang of drug smugglers.

Riggs and Murtaugh are on the trail of South African diplomats using their immunity to engage in criminal activities.

Riggs and Murtaugh pursue a former officer who uses his knowledge of police procedure and policies to steal and sell confiscated guns and ammunition to local street gangs.

With personal crises and age weighing in on them, Riggs and Murtaugh must contend with deadly Chinese triads trying to free their former leaders from prison and onto American soil.