Knowing that nothing lasts forever, Jem avoids relationships, but when she meets a boy called Spider, and they plan a day out together, her life takes a new twist and turn. Waiting for the London Eye, she sees everyone in the queue has the same number - something terrible is going to happen.

Since the day of her mother's death, 15 year-old Jem has kept a secret. When her eyes meet someone else's, she sees a number - the date on which they will die. Life is hard, until she meets a boy called Spider. Suddenly her world seems brighter, but is it really? Queuing for the London Eye, Jem foresees a chain of events that will shatter their lives for ever. Today, everybody's number is up.