Ji Yeon-hee is a very shy, introverted 23-year-old woman with no dating experience and also a tendency to flush when talking with somebody she suches as. One day, four young men move right into the house right next door to Yeon-hee's residence, as well as to her shock, they become Chanyeol, D.O, Baekhyun as well as Sehun from her favorite kid band Exo, that are aiming to lay low for a while. They employ her to clean their house part-time during the wintertime trip and that's when Yeon-hee figured out that Chanyeol was her lengthy shed youth close friend and also crush "Chan" as well as is the grand son of your house proprietor. As the story takes place, Yeon-hee soon ends up being involved in a love triangle with Chanyeol and also D.O.