The musical was created by Papa Production and later co-produced with SHOWNOTE. It is based on Daniel Keyes’ 1959 novel Flowers for Algernon and was first staged at the NEMO Theater (formerly Sadari Arts Center) in Seoul in January 2006. Composer Jang So-young and lyricist Chun Woo-yeon developed the adaptation, which ran across multiple seasons until late 2007, followed by a large-scale revival in 2017 at Dongsoong Art Center. The story centers on a man with intellectual disabilities who undergoes an experimental operation to raise his intelligence, exploring themes of human dignity, emotional memory, and the limits of scientific ambition.