In Gangnam, Seoul, Jae-Hee knows a secret about a series of disappearances but then vanishes herself. Detective Kang, outlaw Yoon, and Prosecutor Min pursue the truth for their own reasons.In Gangnam, Seoul, Jae-Hee knows a secret about a series of disappearances but then vanishes herself. Detective Kang, outlaw Yoon, and Prosecutor Min pursue the truth for their own reasons.In Gangnam, Seoul, Jae-Hee knows a secret about a series of disappearances but then vanishes herself. Detective Kang, outlaw Yoon, and Prosecutor Min pursue the truth for their own reasons.