交换:朋友的妻子

讲述了每次吃妈妈做的家常饭时都能看到倒计时数字的河玟的故事。

　　平静的湖畔小镇，疼爱儿子的单亲妈妈早织（安藤樱 饰）、为学生着想的爽直老师保利 （永山瑛太 饰）以及天真烂漫的孩子们本过着安稳的生活，却因为一次校园冲突，发酵酿成轩然大波，惹起社会与媒体的关注。当事态越见严重，竟在一个暴风雨的清晨，两个孩子双双失去了踪影……

　　A couple on the verge of a nasty divorce attempt to sell their empty love nest and move on with their lives, separately. After a successful open house they are horrified to discover, days later, that a potential buyer didn't leave their home. While Alice is being held captive in the basement, the unannounced house guest moves in upstairs. She senses her capture is being kept a rebellious secret. She knows her way only way out if she can only get out alive.