My name is Lee Hyeri. I was a high school student in my third year. You're probably wondering why I'm using a past tense, well, Because one night after getting dinner with my friends, I was in a car accident and I died. My soul, however, still wandering. 

His name is Kim Hanbin. He's an idol. He's also the guy I fell in love with... and the only one who could see me.

and as a ghost, falling in love with a human is forbidden.