 Terrorist organization Black September is planning an attack on the United States. A woman called Dahlia is the one overseeing the operation. She was in the Middle East with the other members of the organization, discussing the operation when some Israelis came in; the leader, Major Kobakov had his gun on her but didn t shoot her. Kobakov then informed the US what they found. Though they don t know what their operation is, Kobakov assures them that it will be devastating. So, with FBI man, Corley, they try to find out what it is before it s too late. But they both have different ways of doing things, and since Kobakov is the visitor, he is warned to watch it. Dahlia s "partner in crime" is Michael Lander, a Vietnam P.O.W., who is psychologically scarred by that experience, thus making him very susceptible to her machinations.