Kang Seulgi is a famous mystery novelist. Bored and suffering from writer's block, she kills off the main character in her successful book series. She is brought in by the Seoul Metropolitan Police Department for questioning regarding a copy-cat murder based on one of her novels. She is intrigued by Bae Joohyun, the detective assigned to the case. Seulgi decides to use Joohyun as her muse for Bae Irene, the main character of her next book series and uses her friendship with the mayor

How can they deal with their break up? Was it really the right choice or will both of them regret it, hard​​​​​​? Both sides of Byulyi's and Yongsun's break up revealed.  What really happened? 

Even when it's the coldest winter... her sweet words, her sweet smile, it's all enough to make me warm. She gives me strength, she's my muse, without her beauty my inspiration would be gone. Thank you for being beautiful, Kim Yongsun.