A terrorist bomber is on the loose. Can Natalia save the day? A group of domestic extremists is terrorizing the city of London. Caught up in events through association, Natalia Nicolaeva is offered a choice by the British intelligence services. She can go undercover for MI5 or face deportation to Russia, where dire consequences await. After agreeing to do her part, the question remains: can Natalia stop these mad bombers from carrying out their diabolical plans before it's too late?