The plot hardly seems important, but for what it's worth here it is: a Cuban mafia boss has foolishly allowed himself to leave some incriminating evidence on a computer disk. The only guy who knows where the whereabouts of the disk is in a chain gang in the Deep South. An undercover cop is sent to the chain gang to find out where the disk is, and to keep the guy alive when the Cuban hitmen turn up to silence him.
The first half of the movie borrows liberally from The Defiant Ones, with Baldwin and Fishburne chained together and fleeing through the swamps from both the good guys and the bad guys. Later on, they reach the big city, and the film then borrows ideas from any police actioner that you could care to mention (Lethal Weapon, The Dead Pool, Tango and Cash, Striking Distance, et al). In fact, the second half of the film consists solely of fist fights and car chases and shootouts, all inspired by similar movies from the genre.
Fled never bores you, but it never particularly engages your brain. It is a quickly forgotten film, but it is also the perfect film to watch with your mates while you sink a six-pack of beer and a 16" pizza on a Friday night.