一次偶然中,瑞格(梅尔·吉布森 Mel Gibson 饰)与莫道(丹尼·格洛弗 Danny Glover 饰)这对好搭档撞破了一起走私南非金币的违法勾当,正义感爆棚的两人决心绝不对此坐视不管,于是展开了一系列充满了进场刺激的火爆追击。 随着调查的深入,一个名叫艾金(乔斯·雅克兰德 Joss Ackland 饰)的男人浮出了水面,他的真实身份竟然是享有外交豁免权的南非外交官,瑞格和莫道陷入了举步维艰的境地。两人被上司派去保护一名叫盖茨(乔·佩西 Joe Pesci 饰)的男人,他曾经是帮助艾金洗钱的同谋,如今成为了警方的污点证人。很快,发生的一系列事件就让瑞格和莫道明白了,保护盖茨甚至比追击艾金还要危险和困难。Riggs and Murtaugh are trying to take down some drug dealers but the they turn out to be not run of the mill drug dealers; they have automatic weapons and helicopters. Eventually they grab one of their vehicles and find a million dollars worth of gold coins or Krugerrands in the trunk. Later Murtaugh is threatened by the men they're pursuing. That's when the Captain reassigns them to protect a man named Leo Getz who is suppose to testify in a big case. When they get to where Leo is, someone tries to kill him and that's when they learn he laundered half a billion dollars worth of drug money. He then takes them to a place he once went to and that's when the people there start shooting at them. Later when they come back with back up they learn that the men work for the South African consulate and have diplomatic immunity. They deduce that they are the ones they were looking for, but because of they have diplomatic immunity they can't do anything.