When British intelligence sends some photographs to CIA analyst "Jack Ryan" (Alec Baldwin) he immediately races to his boss (James Earl Jones) with what seems like a fantastic tale about a submarine that uses a hydro-dynamic drive. That renders it almost silent to traditional sonar and therefore a threat to NATO. Next thing we know, the Soviet's have mobilised their Atlantic fleet and it occurs to "Ryan" that they could have a defection on their hands. He now has to convince his sceptical superiors that this isn't just a wild goose chase, and that "Ramius" (Sean Connery) has a plan to bring hi...