Reports has it that a group of terrorist has infiltrated the country. These terrorist has evil plans to the country. FBI doesn't have clue on their intentions, but you are given the authority to chase these suspect and make sure that they can't do any harm even before they commit one.
The idea here is to chase the suspects. Once, you reach the target, you need to take them out. You can do this either by shooting at them or bumping their car till it crash. It is not important on how you do it. The game gets harder and harder as you make some progress.