Natalia Nicolaeva is "studying in London, where a group of domestic extremists is terrorizing the city. Caught up in events through association, Natalia 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?"