When a crime-ridden city's mayor and his re-election opponent are both assassinated in quick succession, two investigating FBI agents discover that City Hall holds more secrets than just the identity of the killer. As they begin piecing together clues, the two reluctant partners, Agent Archer (Sean Patrick Flanery) and Agent Driver (Kristanna Loken), learn that they are pursuing well-trained professionals who will stop at nothing in order to succeed with their plan. As the two agents gradually develop a mutual professional respect, they also begin to unravel a far-reaching criminal conspiracy that puts all the citys residents at grave risk. As their investigation deepens, the agents suddenly realize that they are confronted by a mysterious, centuries-old, powerful adversary, and they cannot trust anyone other than each other. When Archer and Driver suddenly become the hunted -- solving the murders becomes secondary to their own survival.