Jungkook is a volunteer to help people on a cruise. Jungkook is in charge of a activity that little kids joins and teens.
Jungkook starts to flirt with a girl once he starts to know her.
Jungkook who is a teenager met a mysterious girl who once saved him from people who had kidnapped him. Since then she appears in his dreams and she saves him whenever he is in trouble. Whenever she walks past him there are sounds of the bells dangling even though there are no bells and the streets appear to be completely empty.
Will he be able to find the mysterious girl? or is she going to remain an unsolved mystery forever.