Detectives Mike Lowery (Will Smith) and Marcus Brunette (Martin Lawrence) have 72 hours to find $100 million worth of heroin before Internal Affairs shuts them down. Lowery becomes more involved after a friend is murdered by the drug dealers. Matters become even more complicated when Lowery and Brunette have to switch places to convince a witness to the murder to cooperate. Lisa Boyle co-stars. (1995)