卡米拉(诺薇米·洛夫斯基 Noémie Lvovsky 饰)和埃里克(萨米尔·盖丝米 Samir Guesmi 饰)相识在十六岁的碧玉年华,相知、相爱,一路走来顺风顺水,两人是朋友和亲人眼中的佳偶天成。结婚后,卡米拉生下了一个可爱乖巧的小女儿,一转眼,曾经的少年少女已为人父母。 时光荏苒,二十五年的漫长人生挥洒在弹指之间,随着时间的流逝,爱情之光日渐暗淡,终于,埃里克遇见了另一个令他心动的女人,他选择背弃了多年来风雨同舟的卡米拉。12月31日夜晚,当所有人都沉浸在迎接新年的快乐气氛中,只有卡米拉一人为自己落魄的生活而黯然神伤,而在一瞬间,卡米拉发现自己竟然重新回到了16岁那年,一切都倒退成为了青翠欲滴的模样,包括她和埃里克之间的爱情。重新站在时光的起点,这一次,卡米拉会做出怎样的选择呢?Camille was only sixteen and still in high school when she fell in love with Eric, another student. They later married and a child and were happy for a while. But now twenty-five years have passed and Eric leaves her for a younger woman. Bitter and desperate Camille drinks so much liquor at a New Year Eve's party that she falls into an ethylic coma and she finds herself... propelled into her own past! Camille is sixteen again when she wakes up this morning, her parents are not dead anymore and she must go to school, where she will meet her schoolmates and, of course, Eric. Is she going to fall for him again and... be miserable twenty-five years later? Or will she avoid him with the result never having her beloved daughter? Who ever said that time traveling was fun?