One second in time is all it takes for life to go downhill for Niall Horan and his girlfriend Avery Jackson. One moment. After waking up from a coma, the boys and Niall get the shock of their lives. Avery doesn't remember them. To make things even worse? They have one month to try to get Avery to remember them, especially Niall, and her life. One month or she won't remember anything. The boys race against time to try to find the missing puzzles of Avery's memory before its too late. Every hour, every minute, every second counts.