A series of murders takes place on a reunified Korean Peninsula, targeting retired scientists. A joint team of investigators from North and South Korea is formed to solve the case, but the killer continues to taunt them with a signature pendant at each crime scene. The investigation becomes personal when the leader's son is kidnapped and killed by the killer, who is then revealed to be wearing the son's clothes. Meanwhile, the chief of police is kidnapped and his daughter, a talented criminal psychologist, joins the investigation to find her father.
Yesterday
A mysterious phenomenon unfolds over 30 years, prompting the Ministry of Defense to assemble a team of elite scientists to solve a series of child abductions. Three decades later, a united Korean Peninsula in 2020 is shaken by a new wave of violent murders.
