山口太一和妻子华结婚多年，膝下育有一双儿女奈穗和顺，生活尽管波澜不惊但也算是幸福美满。一天，奈穗突然告诉华自己有了想要结婚的对象，令太一没有想到的是，此人竟然就是自己的下属元木慎吾。尽管心中多有不满，但太一拗不过奈穗的坚持，出面参加了她和慎吾的订婚仪式，在仪式上，太一遇见了从前的初恋情人幸子。聪明的华看出了太一和幸子之间的关系并不一般，尽管表面上保持了平和，但华的内心里很不是滋味。一次偶然中，奈穗撞破了顺隐藏多时的地下恋情，在错综复杂的秘密之中，山口家平静的生活即将走到尽头。

Mr. (Tamura) and Mrs. (Kuroki) Yamaguchi are an old-fashioned middle-aged couple with two children about to become independent. As they prepare for the daughter's (Kato) upcoming wedding to Mr. Yamaguchi's work underling (Omori), they find that the love they themselves experienced at the time of their marriage isn't really there anymore. The wedding planner (Hada), becomes smitten with Mr. Yamaguchi when he begins to meet her often for conversations, and she eventually seduces him into bed, creating a rift in the middle-aged couple. At the same time, their college-student son (Tsukamoto) falls in love himself with a nurse (Nishida) who is much older than he is and has a little daughter, to boot. They will have to fight for their love to be accepted by his parents... -DramaWiki