East German defector turned CIA agent Alex Holbeck (Martin Sheen) is assigned to discover the names of five Soviet dissidents targeted by a ruthless KGB hit squad. In order to stop this diabolic plot Holbeck must infiltrate Soviet intelligence and obtain information from Enigma a Russian computer component. But when he arrives in Berlin his cover is blown and Holbeck quickly seeks shelter with his former lover Karen. But as they get deeper in this deadly game of pursuit Alex must outwit the assassins before they fall into the hands of the enemy.