Overview
Double Agent is a 2003 South Korean espionage action thriller film directed by Kim Hyeon-jeong about a North Korean intelligence officer who defects to South Korea.
Plot
In June 1980, Rim Byeng-ho, a North Korean intelligence officer posted to East Berlin, Germany, attempts to cross Checkpoint Charlie with the intention of defecting to South Korea. During his attempt to cross to West Berlin, he is shot and wounded by North Koreans attempting to prevent his defection. South Korean agents successfully retrieve Rim from no-man's land, and congratulate him on his freedom. A week later, Rim is under brutal interrogation by South Korean Intelligence, who suspect he is a spy despite Rim's steadfast denials. Meanwhile, at senior level, a decision is made to allow Rim to work for South Korean Intelligence, after files brought over from North Korea by him prove to be authentic.
December 1982. Rim has been posted to Gangwon, a rural province, and is assisting in the training of South Korean spies, who will infiltrate North Korea. During his down time, Rim listens to classical music on a radio program hosted by Yun Su-mi. Having spent two years in the backwaters, Baek Seung-cheol, a senior agent, arrives in Gangwon province and informs Rim that he has been promoted and is to return to Seoul as an analyst.
February 1983. Rim has begun to assimilate with and earn the trust and respect of his fellow agents although he is still kept away from highly sensitive materials. Rim continues to listen to Yun's classical music radio program, until Yun announces the program is to end. The last musical piece played is a special request, and this transpires to be a code - Yun is a North Korean sleeper agent, and Rim is to make contact. He is a double agent, and when he contacts Yun at the radio station, she is to be his handler. Although Yun no longer has a job at the radio station, they are able to maintain contact when Baek's wife, a churchgoing acquaintance of Yun's, sets Rim up with Yun with the approval of Baek who has been wanting Rim to settle down. A relationship between the two begins to flourish.
From Wikipedia (CC BY-SA 4.0).