英國影壇新力量，繼深受影迷喜愛的《愛在週末邂逅時》和大獲視評力讚的電視劇《Looking》後，再一驚喜國際影壇作品，男女主角更於柏林影展雙雙獲封≠柏林影帝影后。夏綠蒂藍萍的動人演出，更令她勇奪多個影評人協會和影展的影后殊榮。一對還有一周就結婚45周年的夫妻，他們正準備舉行慶祝派對，迎接婚姻的歷史一刻。誰料，丈夫忽然收到一封來信，當年痛失的首任愛人，屍體終於被發現冰封於阿爾卑斯山。丈夫大感震驚，一直不知道這段過去的太太心亂如麻。他未忘，她更未能忘，隨著45周年的慶祝日子臨近，耿耿於二人內心的過去，會不會成為這段婚姻的絆腳石？

Director Andrew Haigh has always had keen eyes for modern relationships as shown from his previous films Weekend and the TV series Looking. This time, his lens focus on a pair of long-married couple. Ready to celebrate their 45th wedding anniversary, Kate and her husband plan to host a party for this historical moment of their marriage. But when his husband receives a letter notifying him that the dead body of his first love is found frozen around the Swiss Alps, he is shaken. It was a past Kate has never been aware of, suddenly she is no longer sure she really understands her husband as much as she once believed. With the party happening in a few days, will the couple survive the crisis of trust?