Do-gyeong jumped in to save his student Jiyong from drowning. After the two pass away, Myeongji, Do-gyeong's wife, and Jieun, Jiyong's sister, are left alone in the world, having to cope with the loss...

中学生秀儿（李世英 饰）在自己十三岁生日当天知道了一直被称为英珠姐姐，同时独立抚养自己的人竟然是自己的亲身母亲（秋相微饰 ），因为现实生活的压力英珠忽略了成长期敏感的秀儿情绪，秀儿认为人气歌手尹雪英（金润雅 饰）就是自己的亲身妈妈，就此产生了寻找真正妈妈的计划。秀儿该如何化解与妈妈自己的矛盾关系呢？...