The soul of a social animal girl is transformed into a vicious female supporting character in a fairy tale. In order to survive, she decides to stay away from the plot and cling to the lap of the future boss (junior brother). But she found that the cold and aloof master she wanted to stay away from the most looked at her more and more wrongly. This is a story about the extreme tension between a "duplicitous and cold-hearted master" and a "sober and dramatic girl in the world".