Synopsis
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.
Cast

Lee Jung-jae
Park Pyong-ho

Jung Woo-sung
Kim Jung-do

Jeon Hye-jin
Bang Ju-kyung

Heo Sung-tae
Jang Chul-sung

Go Youn-jung
Cho Yoo-jung

Kim Jong-soo
Director Ahn

Jeong Man-sik
Yang Bo-sung

Lim Hyung-kook
Transposer

Jung Kyung-soon
Chun Bo-san

Jeong Jae-seong
Pyo Dong-ho

Song Young-chang
Director Kang

Hwang Jung-min
Lieutenant Ri

Lee Sung-min
Cho Won-sik

You Chea-myung
CEO Choi

Kang Kyung-hun
Jung-do's Wife

Im Sung-jae
Security Command Investigator

Jeong Seong-mo
General Kim Soon-sik

Paul Battle
CIA Chief of East Asia

Kim Hak-seon
Shin Ki-cheol

Oh Man-seok
Reporter Kang

Andreas Fronk
Washington Assassin

Lee Chae-eun
Yang Bo-sung's Daughter

Song Duk-ho
Male Student 1

Jang Seo-kyung
Female Student 1
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