After three right-wing thugs break into a museum with the intention of stealing a diamond, they release a ten million year old flying monster which escapes to wreak havoc over London. As if this is not bad enough, the Prime Minister cannot even tell the general public what is happening. With just days before "friendly powers" take matters into their own hands, only one man can save the country from destruction. His only assistance comes from a forcibly enlisted former girlfriend whom he hates and cannot trust.