1988年7月15日,一所大学为毕业生的狂热所充盈。籍着这股躁动,轻浮的德克斯特(吉姆·斯特吉斯 Jim Sturgess 饰)穿过层层人墙,寻找可以与之共度这最后狂欢与浪漫之夜的尤物。他将目光锁定在艾玛(安妮·海瑟薇 Anne Hathaway 饰)的身上,一个来自普 通工薪家庭的聪慧女孩。然而短短的交流过后,他们之间什么也没发生,却又注定改变了彼此的一生。在之后的岁月里,两人以友人知己的身份时聚时散,彼此分享着人生的苦辣酸甜和各种感悟。德克斯特经历着事业和婚姻的起落,艾玛品味着底层人生的辛酸。他们是远在天边心也紧紧相连的知己,是深锁心中最为笃真却相隔最远的爱恋…… 本片根据英国作家大卫·尼克尔斯(David Nicholls)的同名畅销小说改编。Emma and Dexter meet on the night of their university graduation. We see them every year on the anniversary of that date - July 15th. Emma is smart but success doesn't come quickly for her, whereas for Dexter, success and women come very easily. Through the years they grow apart as their lives take different directions and they meet other people. But as they grow apart from those other people and their lives start taking opposite directions again, Emma and Dexter find that they belong with each other.