Hyun-jun falls deeply in love with Seung-hee, while Sa-woo nurses a quiet, unrequited love for her. But before any love triangle can fully blossom, the trio is sent on a mission to Budapest to prevent the assassination of a North Korean defector. The mission goes horribly wrong. Hyun-jun, betrayed by an unknown mole within the NSS, is kidnapped and taken to a brutal prison camp in the mountains of North Korea—all while his colleagues back home are told he is a traitor who sold out his team.
The story begins with two childhood best friends, Kim Hyun-jun (played by Lee Byung-hun) and Jin Sa-woo (played by Jung Joon-ho). They are special agents for NSS (National Security Service), an elite, fictional South Korean intelligence agency. Their bond is forged in training and trust, and they are assigned a mission that will change their lives: to protect and shadow Han Seung-hee (Kim Tae-hee), a brilliant but secretive computational linguist and profiling expert. iris korean tv series
The central mystery is the titular "IRIS"—a shadowy, multinational organization more powerful than any nation-state. IRIS manipulates both North and South Korea, fueling conflict for profit and political leverage. Who is IRIS? Who is the enigmatic Mr. Black? And which side of Hyun-jun's own agency can he trust? Hyun-jun falls deeply in love with Seung-hee, while