“Sparkling Watermelon” will tell the story of a boy living a double life between a model student and a band member who gets to time slip and meets his 18-year-old father. The two will build friendships there.In 2023, high school student Eun Gyeol, a CODA with a passion for music, leads a double life as a model pupil by day and a guitarist by night. When he discovers a mysterious music store, he’s unexpectedly transported back to 1995, where he meets his father, Ha I Chan, as a high schooler. I Chan doesn’t recognize him and is infatuated with a cellist, Se Gyeong, not Eun Gyeol’s mother, Cheong A. To set things right, Eun Gyeol joins a band led by I Chan, hoping to reunite his future parents and return to the present.