Yuju is a girl with a heart disease. She doesn't want anyone to know. She wants to blend in with the crowd. She's never been loved, nor does she know how to love. *** One day she falls in love with this amazing guy. (JungKook) But she only has 3 hours left to live. How will she tell him? Will JungKook leave Yuju? What will happen to their relationship? *** What happened to them in their past lives? Will they remember their real parents? What will happen to JungKook? Will he leave Yuju alone?