In 2023, Eun Gyeol is a CODA (Child of Deaf Adults) high-school student, merely helium has a passionateness for music. During the day, helium is a careful exemplary pupil, merely astatine night, helium rocks retired arsenic a guitar player successful a band. But when helium stumbles crosswise a unusual so far beguiling auditory communication store, helium goes moving backmost successful clip to 1995.
Here, helium comes human face to human face with his father, Ha Yi Chan – arsenic a advanced schooler! Yi Chan takes Eun Gyeol for a moonstruck when the last mentioned calls him “dad”. Worse still, it looks similar Yi Chan has a crushed leather connected Associate in Nursing frigid violoncellist called Se Kyeong – non his approaching mother, Cheong Ah!
In a command to put option property “right,” Eun Gyeol joins a set fronted past his approaching father. But volition this beryllium adequate to aid Eun Gyeol convey his approaching parents together… and volition helium of all time return backmost to the 2020s?