Head of Data analysis department
After a high-ranking North Korean official requests asylum, KCIA Foreign Unit chief Park Pyong-ho and Domestic Unit chief Kim Jung-do are tasked with uncovering a North Korean spy, known as Donglim, who is deeply embedded within their agency. When the spy begins leaking top secret intel that could jeopardize national security, the two units are each assigned to investigate each other.
KCIA Agent Yoo Dong-hoon
When the investigation of 'Koreagate' takes place, Park Yong-gak, a former KCIA director who knows everything about the government's operations, heads to the United States in exile.
Detective 3
Two spies share a secret bond, despite their loyalties. A North Korean assassin is sent to Seoul to kill a dissident, but instead he teams up with a South Korean agent in search for revenge.