The game begins in the Middle East, where the player is part of a protection detail for an American dignitary traveling through the region. The player must protect the dignitary from various attacks by local insurgents.

After a few missions, the player returns to the United States, where they stumble upon a plot by major arms dealers to sell off 4 chemical weapons bombs to various terrorist groups. The game's remaining missions revolve around tracking down the arms dealers, as well as preventing the terrorist groups from using the chemical bombs against major targets.

The game ends with a couple major missions. In one mission, the player must escort the Vice President out of a large hotel that is being attacked by every terrorist group the player had previously defeated. In the game's last major mission, terrorists detonate 2 of the chemical bombs in the Presidential subway system, forcing the player to escape with the U.S. president on foot through the Washington D.C. sewer system, where they are attacked by heavily armed commandos.