Four volunteers sign up for what initially appears to be a typical paid research study, only to discover that they've unwittingly become involved with a classified government program that was said to have been terminated nearly two decades ago.

When a series of gruesome murders hit Seoul, the Korean investigation police has no choice but to ask help from world-renowned French doctor Alice Launey who developed a revolutionary technique for recognizing bodies. With more corpses on the way and a mysterious organ trafficking ring uncovered, things are about to get more dangerous in the land of the morning calm…