A missing person case involving a female university student and the victim in a hit and run case appears to be the same person. Detectives look for a witness. The witness, Min Soo Ah appears, but Min Soo Ah is also blind. She used to be a promising student at the police academy. With her acute senses, Min Soo Ah is able to reveal important clues on the hit and run case. Another witness, Kwon Ki Sub then appears. Ki Sub, who witnessed the case with his own eyes, gives contradictory statements to Min Soo Ah. The investigation then goes through many twists and turns, while Min Soo Ah finds herself up against the killer.