Set around the formation and early years of the band Dongmulwon, the musical follows a group of young musicians navigating friendship, artistic ideals, and diverging life paths. Framed through memory and reflection, the story juxtaposes youthful ambition with later-life regret and nostalgia. Well-known songs such as “Hyehwadong (혜화동),” “변해가네 (Changing),” and “Writing a Letter on a Cloudy Autumn Sky (흐린 가을 하늘에 편지를 써)” are woven into the narrative, emphasizing emotional resonance over plot-driven conflict. The tone is lyrical and reflective, blending live music performance with dramatic recollection.