在美容诊所高强度工作、身心俱疲的星野绿（桥本环奈 饰），因诊所突然倒闭而失业。在哥哥的建议下，她来到已故祖母留下的海边别墅，开启了一段治愈身心的“人生假期”。 在这里，她遇到了神秘别墅管理人西上（蔡钟协 饰）。在西上的帮助下，绿度过了充实的浪漫假期，但西上忧郁的眼神中似乎隐藏着隐情。

High schooler Akiko has big plans to become a popular mangaka before she even graduates, but she needs to get much better at drawing if she ever wants to reach her goal. Looking for an easy fix, she signs up for an art class, thinking all her problems will soon be solved. She's in for a surprise: her new instructor is a sword-wielding taskmaster who doesn't care about manga one bit. But maybe this unconventional art teacher is just what she needs to realize her dreams!

为了举办个展来日的世界级青年现代艺术家NERO，抵达后暗中前去探访了传说中装饰着自己画作的赝品的旅馆，并在那里遇到了与自己长得犹如双胞胎的韩国留学生DAEWON。震惊之余，NERO出于“某个目的”，向DAEWON提出了与自己交换身份的请求。在与旅馆继承人的薰（暂译）接触的过程中开始直面过去的NERO，假扮着时代弄潮儿的同时也在摸索着自我方向的DAEWON，拥有着相同外貌，却有着不同性格不同身份立场的两个人……在他们交换身份的这期间，他们所找到的“真正的自我”到底是？