Micky and Sung Min had been good friends since forever until one day when both stumble upon a beautiful girl, named Soo-Hyun, playing a flute. As a result of the time the three spend together, both boys fall in love with her. Micky decides to write a song for her expressing his feelings. However, when Micky is about to give her the music, he sees her giving a special gift to Sung Min. He decides to move away and meets Soo-Hyun again many years later, who tells him that Sung Min is dead. Slowly, the story reveals itself.