An international terrorist for hire named Castor Troy is being relentlessly pursued by Sean Archer, an FBI agent whose son Castor accidentally killed in an assassination attempt years earlier. The FBI receives information that Castor's brother Pollux has chartered a plane at a Los Angeles airport, leading Archer to believe that Castor is with him. Archer leads an FBI team in chasing the plane down a runway and is able to shoot one of the engines. Unable to take off, Castor kills the pilot and crashes the plane into a hangar. In the ensuing chaos, Pollux is captured by the FBI and Castor is knocked into a coma after bragging to Archer about a bomb that would destroy Los Angeles.