In a tunnel on a certain night three months ago, a man chased and killed a woman. At this time, a girl happened to pass through the tunnel. I thought that the murder was seen by this person named Li Mei, but I didn't expect that she was a blind woman. Remi is going to undergo a sight restoration operation the next day, and Kuroda, the doctor who handles the knife, dominates the heart of Remi, who has been blind since childhood. The Xing police came to Kuroda to investigate the situation.