Jieun (IU) is on her way to Yoongi's studio to start work on her new song 'Eight' but gets lost in the Big Hit building. She coincidentally runs into Jungkook in the elevator which malfunctions and gets stuck...

Jung Kook, known as forever fanboy of IU, never dreams that someday he will get to know her better. He always thought that their path will never cross despite of how close they are, like 2 parallel line that will never meet. However, one day, the fate destined them to be in close contact, causing them to be closer than ever.