South Korean horror. When members of a religious cult all take their own lives in a mass suicide, only one survivor is left: a pregnant woman. She dies in childbirth, but the doctors manage to save her baby. Twenty years later, another group of cultists are found dead and police believe that a serial killer could be at work. Three religious warriors, calling themselves 'Soul Guardians', begin to suspect that there are darker forces at work however, somehow linked to the orphaned child.