原明莉（藤原纪香 饰）是一名在白鸟宝石精品店里工作的店员，和店里的会计师迅人正在交往中。原明莉和迅人都暂时没有想要结婚的念头，同时原明莉自己知道，她对于这家店来说，只不过是一个随时都可以被替代的花瓶而已。已经29岁的原明莉，无论是爱情还是事业，都陷入了深深的迷惘之中。

　　在同学会上，原明莉意外的邂逅了曾经的恋人阿兰（大泽隆夫 饰）。此时的阿兰已经结婚成家，他幸福的样子令原明莉的心里很不是滋味。当原明莉得知阿兰虽然已为人夫，但是和妻子并没有小孩后，竟然萌生了将阿兰抢回自己身边的念头。

After not having seen him for several years, a woman working as a clerk at a stylish boutique finds herself drawn to her old lover from college after seeing him again at a class reunion. While he is also attracted to her, there are the small matters of his wife and her boyfriend to be considered. Will they remain faithful to their partners, or fall back into each other's arms?