Narcotics cops Mike Lowrey(Will Smith) and Marcus Bennett(Martin Lawrence) head up a task force investigating the flow of ecstasy into Miami. Their search leads to a dangerous Cuban drug kingpin Hector Juan Carlos "Johnny" Tapia(Jordi Moll?), whose plan to control the city's drug traffic has touched off an underground war. Every time the Miami PD has ever arrested Tapia, Tapia has sued the Miami PD for false arrest, and won millions of dollars. This has caused the department to back off and not go after Tapia. Well, everyone has backed off except for Mike and Marcus, who have never faced Tapia before. Meanwhile, things get sexy between Mike and Syd(Gabrielle Union), Marcus's sister.