Park Hwa-young is an 18-year-old student living alone. Her friends call her “mom” and use her house as their place to hang out, but don’t really include her in their clique. Hwa-young pays particular attention to one of the friends, Mijeong.朴花英是一名独居的18岁学生。她的朋友称她为“妈妈”，并把她的房子作为他们出去玩的地方，而且不把她真正纳入在他们的小圈子里。朴花英特别关注其中一个朋友美贞。