After his impetuous musician girlfriend, Samantha, dies in an accident shortly after they had a fight (and nearly broke up), a grief-stricken British businessman, Ian Wyndham, living in London gets a chance to relive the day all over again, in the hope of changing the events that led up to her getting killed.

Grief, guilt, and betrayal. In North London, a young mother dotes on her four-year-old son and lives in a modest flat with her husband, a cop in the bomb squad. The Arsenal football team is their religion. On May Day, a major terrorist attack brings tragedy while she is in the arms of a rich reporter who lives over the road. She wishes she were dead. In grief and guilt, she pursues revenge, faces betrayal, experiences delusions, and may be suicidal. Two men seek her affection: the reporter and a colleague of her husband's who imagines caravan camping with her on a beach. In London, the city of the Great Fire and of Hitler's bombardment, is there any way back to life for her?