An unlicensed boxing promoter, called Turkish (Jason Stratham), is pulled into trouble when he becomes involved with the big time criminal, Brick Top (Alan Ford). Brick wants him to arrange a fight and fix who wins it.
However things get complicated when the boxer they lined up to win is beaten to a pulp by One Punch Mickey O'Neil (Brad Pitt). Now they have to try and convince One Punch not only to fight for them, but to ruin his reputation and lose for them aswell.. not an easy task.
Meanwhile, a diamond theft has gone down but now the 84-karat diamond has gone missing and Avi (Dennis Farina), the guy who was supposed to get the stoine, and the boss comes to England to search for it, with the help of his cousin, Doug The Head (Mike Reid) and Bullet Tooth Tony (Vinnie Jones).
As events twist and turn, the two situations blend into one with a chain reaction of events carrying on for each and every character.