I hate to admit this, but I know little or nothing about this movie. Here's what I could discern from the trailer:

A group of criminals blackmail an ex-con, Ben Affleck, into helping them "knock over" a casino. Ben realizes that even if he helps them, these criminals will probably kill him. He's forced to try to stop the bad-guys before they can escape with the money and kill him. 2/2/2000