As young French couple Gilles and Marion officially separate, we see, in reverse order, the milestone moments in their relationship: Gilles revealing his unfaithfulness at a tense dinner party; Marion giving birth to their premature son while Gilles is elsewhere; Gilles and Marion's joyous wedding; and, finally, the fateful moment when they meet as acquaintances at an Italian beach resort, and their love affair begins.

There is just one week until Kate Mercer's 45th wedding anniversary and the planning for the party is going well. But then a letter arrives for her husband. The body of his first love has been discovered, frozen and preserved in the icy glaciers of the Swiss Alps. By the time the party is upon them, five days later, there may not be a marriage left to celebrate.

在别人眼中，Foster医生有着令人羡慕的一切，工作受人尊敬，家庭幸福和睦，夫妻恩爱甜蜜，孩子乖巧听话。其实她自己也一直这样认为，直到有一天，一支唇膏，一根金发的出现，让她开始怀疑眼前的一切。为了查清楚丈夫是否真的出轨，她甚至利用病人帮她跟踪丈夫，结果却发现事情的真相，完全在她的预料之外。