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.
송강호
as Lee Han-kyu
강동원
as Song Ji-won
전국환
as Shadow
박혁권
as Go Kyung-nam
Yoon Hee-seok
as Son Tae-soon
최정우
as National Intelligence Deputy
Kwon Beom-taek
as Ji Myung-hoon
정인기
as Kim Sung-hak
Jo Hyun-wu
as Seong-chul
차엽
as Jae-hwan
Lee So-yoon
as Hyoung-sook
Lee Jasmine
as Du Lee-ahn
