Is fate really destined? On an ordinary, busy Christmas Eve, Jonathan (John Cusack) and Sarah (Kate Beckinsale) met. Within just a few hours of knowing each other, they fell hopelessly in love with each other. Although, they each have their own circle of life and their own partners. After they happily strolled the streets of Manhattan for a whole night, dawn came and they had to face reality. Sarah rejected Jonathan's request to exchange numbers and decided to let God decide everything. A few years passed in a flash, and they never met again. At this time, Jonathan was ready to enter the marriage hall, and Sarah also received her boyfriend's engagement ring. However, a book and a movie poster can make them involuntarily think of that Christmas Eve a few years ago. On the eve of the wedding, Jonathan began to look for Sarah based on clues left a few years ago.