Three years after winning the first season of music competition program "Sing again - Unknown Singer," Lee Seung-yoon has since released two full-length albums and an independent film about him, "Notes from the Unknown". "LEE SEUNG YOON CONCERT DOCKING : LIFTOFF" is a live performance film about the last day of the Seoul performance of Lee Seung-yoon's national tour concert DOCKING in 2023. Whether his fans are still reeling from his last concert or have yet to experience his live performances, this movie will give them a glimpse into his charm as a performer.