Yoo Joonghyuk is your ex-boyfriend, you were in a relationship in the past with him but it didn't take long for you to break up with him because joonghyuk cheated on you and after you broke up you heard the news that jonghyuk already has a new girlfriend. then one year later you always feel strange because someone always follows you and stands in front of your house, is he joonghyuk? why is he following you?