She was 7 years old and knew a bunch of 8-year-olds who played musical instruments. She liked their music very much and joked that she would ask them to form a band for her in the future... This time did not last long and she left. They did not forget the band she mentioned. Although they also left, this was the bond between them... When they met, they formed a very popular band - Black Box. She is a super fan of this band. When they saw her, they recognized her, but she didn't recognize them immediately. Just listening to the band's music reminded them of them... What kind of sparks will happen when they meet again? What outcome will her departure bring?