Twinkling Watermelon

Eun-gyeol and his family move into a new neighborhood. He meets a man who offers to teach him how to play the guitar, and Eun-gyeol works hard to learn it. As he deals with bullies at school, he practices playing the guitar until he is as good as the man who taught him. However, tragedy strikes, and he and his family are forced to move again.

Eun-gyeol tries his best to quit music, but it's not easy for him to do. He gets scouted to join SPINE9, an indie band in Hongdae. To make things worse, he finally gets his hands on the guitar promised by the Viva Music store owner. He is torn by which path to take and finds himself walking into a suspicious music store.

Eun-gyeol gets stuck in 1995 and doesn't know how to return to the present. What's worse is that he meets his young father, Yi-chan, who can talk and wants to start a band to impress a girl who isn't Eun-gyeol's mother. Eun-gyeol poses as Yoon Dong-jin, a musical genius, in order to try to become a member of Yi-chan's band.