Frankie Ippolito is a hostage negotiator called into duty the night before his wedding in London. A man who has parked himself in a construction site in Piccadilly Circus is standing on a newly uncovered, unexploded bomb from WWII. He tells local law enforcement he will only speak with Frankie and this sets off a chain of events, where Frankie is drawn into an overnight struggle to stop the bomber with whom he has a past.