Peace in Northern Ireland has brought counter-terrorist Sean Doyle back to the UK. It has also brought frustrating boredom into the life of British soldier Robert Neville, and when his wife Julie decides to leave him, taking their daughter Lisa, he has nothing left to lose. Turning his wife into a walking bomb, he demands a car, but fails to take Lisa with him in his escape. Determined to get her, he begins a bloody bombing campaign in Central London, using his military skill to systematically detonate a device every hour until his demands are met. Doyle must find Neville and end the carnage before he can explode the final devastating bomb.