While working an undercover prostitute sting operation in a nightclub to arrest a pimp named Neptune, Miami-Dade County, Florida Police detectives James "Sonny" Crockett and Ricardo "Rico" Tubbs receive a frantic phone call from their former informant Alonzo Stevens. Stevens reveals that he's leaving town, and, believing his wife Leonetta to be in immediate danger, asks Rico to check on her. Crockett learns that Stevens was working as an informant for the Federal Bureau of Investigation but has been compromised.