In 1990, number of children suddenly disappear. Meanwhile, the Ministry of Defense selects an elite group of scientists for a top-secret mission. Then, 30 years later ... The year is 2020 on a reunified Korean Peninsula. A string of murders is committed against retired scientists. The Special Investigations (SI) unit staffed by a crack team from the former North and South Koreas and outfitted with the latest technology is brought in to investigate. The killer, however, far from being deterred, taunts them with a signature pendant at every murder scene. In an act of devilish boldness he even kidnaps the son of the investigation team's leader, Seok
김승우
as Seok
김윤진
as Hui-su (as Yoon-jin Kim)
김선아
as May
최민수
as Goliath
Jung Eun-Chan
as Jo
전무송
as Dr. No Hee-Ahn
Lee Seung-chae
as Police chief's secretary
이호재
as Kim In-Soo
정호빈
as Squad leader
Kang Hyun-joong
as Det. Ko-Myoung
