Chaewon who hates commitment embarks on a series of firsts for Minju, a girl with Goldfield Syndrome.  "Don't you..." a hesitant pause. "ever get tired?"  "If it's for you then never." She smiles, trying her best to hide the throbbing pain that lies beneath her heart. 

Stuck inside a haunted classroom, exes Chaewon and Minju has no choice but to spend the night together alone... with unwanted entities     

Minju's heart finds itself in a dilemma with the 2 people infront of her who is currently shooting deadly glares at each other; Kim Chaewon, who happens to be her fiance because of a piece of paper And Ahn Yujin, her first love ​​​"Stay away from her." Chaewon gritted her teeth furiously at the sight of Yujin's despicable smirk.  ​"Listen here Kim