Ever since childhood, Kei Yonagi has been drawn to the idea of acting, having always watched closely how actions and emotions vary depending on the character being portrayed. Now a teenager, she is broke and is the only one able to financially support her young siblings. She begins auditioning for any role she can find, with little success. Her luck starts to change when Sumiji Kuroyama, a renowned director, sees Yonagi's performance and is amazed by her ability to immerse herself in the role—so-called method acting. Although she is a diamond in the rough, if she keeps using the same technique over and over, it could lead to her being severely damaged. So, he decides to help polish her, giving Yonagi the opportunity she needs. However, the road ahead is far from easy, and she will need to adapt to overcome the various challenges that come her way.