(Full Synopsis)

Set between the present and memories of the 1980s–90s, the musical unfolds around a reunion that reconnects characters with their youth through music and shared history.

Oh Young-sim, now in her thirties and working as a performance director, is preparing a revival concert of the iconic music show “March of Youth.” During preparations, she unexpectedly reunites with her childhood friend Wang Kyung-tae, who visits the venue for an electrical inspection.

Their encounter triggers a series of flashbacks to their teenage years, filled with dreams, awkward moments, and first love. As past and present intertwine, the musical recreates the emotional landscape of youth through a sequence of hit songs from the era.

Through comedic situations and heartfelt reflections, the story explores how time reshapes relationships while preserving emotional connections. The concert framework allows the narrative to flow between storytelling and performance, culminating in a celebration of shared memories and enduring affection.