The Champions(1968)

After his mother is brutally murdered by the Triad in Thailand, Soo-hyun is adopted by NIS agent Kang Joong-ho, and he grows up with Min-ki like brothers. Min-ki and Soo-hyun both become NIS agents later on. One fateful day, Soo-hyun meets Ji-woo after last seeing her in Thailand when he was a child. They start dating. One day, Soo-hyun ruins a mission when the suppressed memories of the day his mother died surfaces in his mind. NIS Director Jung gives Soo-hyun an undercover assignment to infiltrate the Triad and Soo-hyun takes the job. Soo-hyun fakes his death and assumes a new identity to become a member of the Triad. With his fake identity and new name, he prowls the back alleys of Bangkok.

Global espionage with an American agent and his sexy partner.

After death of his wife, agent Murad was chosen by his uncle, neuro scientist Prof. Bari for a experiment. But sudden murder of Prof. Bari and other top personalities created a war in front of agent Murad with some brutal enemies.

During the Japanese colonial rule of Korea, a Korean surgeon who was raised by a Japanese family becomes a spy for the Korean government.

Stuntman Cha Dal-geon gets involved in a tragic airplane crash and ends up discovering a national corruption scandal in the process. Go Hae-ri, the oldest daughter of a deceased marine, decides to work for the National Intelligence Service as a secret ops agent in order to support her mom and younger siblings, although all she wanted to do is to become a civil servant.

Get Smart is an American comedy television series that satirizes the secret agent genre. Created by Mel Brooks with Buck Henry, the show stars Don Adams, Barbara Feldon, and Edward Platt. Henry said they created the show by request of Daniel Melnick, who was a partner, along with Leonard Stern and David Susskind, of the show's production company, Talent Associates, to capitalize on "the two biggest things in the entertainment world today"—James Bond and Inspector Clouseau. Brooks said: "It's an insane combination of James Bond and Mel Brooks comedy." This is the only Mel Brooks production to feature a laugh track. The success of the show eventually spawned the follow-up films The Nude Bomb and Get Smart, Again!, as well as a 1995 revival series and a 2008 film remake. In 2010, TV Guide ranked Get Smart's opening title sequence at No. 2 on its list of TV's Top 10 Credits Sequences, as selected by readers.

Children who live in hiding with superpowers, along with their parents who live with painful secrets of the past, face enormous dangers together.

Han Ji-hyuk, an NIS agent gone MIA, returns after one year to join a new team as he searches for his lost past.

044 becomes the strongest female soldier excelling in combat through gene manipulation using a virus. However, in exchange for her abilities, her days become numbered.

Top agent Paul Flemming sets out in the Middle East to search for his missing daughter and uncovers dirty arms deals by the secret service...

Bob Lee Swagger is an expert marksman living in exile who is coaxed back into action after learning of a plot to kill the president.

20-something Angus MacGyver creates a clandestine organization where he uses his knack for solving problems in unconventional ways to help prevent disasters from happening.

IRIS II: New Generation explores the aftermath events of IRIS as well as Athena: Goddess of War. The story explores the origins of the former Director of the NSS and IRIS agent, Baek San, and the protagonist Jung Yoo-gun.

Kwon Do-hun is an expert sniper and a secret agent working for the National Intelligence Service. To conceal his true identity, he lives a double life as a regular trading company employee, keeping even his wife Kang Yu-ra in the dark. Though he is occupied with his work, Do-hun cherishes his wife deeply. Meanwhile, Yu-ra, a dedicated homemaker, harbors a secret. Their tranquil existence is thrown into turmoil when Jo Tae-gu emerges, posing a threat to their carefully crafted façade.

The story of an elementary school student who accidentally involved himself in the world of intelligence. It all started when the dose of an agent of evil who are trying to steal a high-tech tool that can change the world, namely I.R.I.S (Infinity Retinal Intelligence System) were stolen from the training center M.A.T.A (Meta Advance Tactical Agency).

From Kim Won Seok, the writer of Descendants of the Sun, a drama about a special bodyguard with a background in special investigations and the Hallyu star he is supposed to protect.

Exposed as an ex-Russian spy, an American single mom must juggle family life and unique shape-shifting skills in a battle against an insidious enemy.

Ace NIS agent Jung Hae-seong is demoted after a mission failure. He goes undercover at a high school to locate King Gojong's missing gold, meeting his teacher Oh Soo-ah, who sees him as her lost first love, stirring old heartbreak.

The story of Jake Webster, an American expatriate in Vienna who was the operator of Jake's Bar & Grill, an American-style establishment near the scenic heart of the city. In fact, the business was a cover for Jake's actual reason for being in Vienna. He was involved in tracking down various spies and international criminals at the behest of U.S. intelligence, which apparently held something against him which, if disclosed, would have resulted in his being deported from Austria and apparently then incarcerated in the United States. Jake's liaison with U.S. intelligence was a Major Caldwell.

The story of a huge incident faced by Seo Soo-yeon from the support management team that supports and manages NIS field agents in China, Jang Cheon-woo, a hidden NIS black agent and Do Jin-sook, deputy director of overseas parts.