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Title: 언더커버 / Undercover
Genre: Action, Crime, Police
Episodes: 16
Broadcast network: jTBC
Broadcast period: 2021-Apr-23 to 2021-June-12
Air time: Fridays & Saturdays 23:00


This drama is a remake of the UK television series “Undercover” that aired on BBC One from 2016-April-3 to 2016-May-15.

Han Jung Hyun (Ji Jin Hee) is an agent of National Intelligence Service (South Korea) formerly Agency for National Security Planning, who has been hiding his identity for quite sometime. Choi Yeon Soo (Kim Hyun Joo), a human rights lawyer, becomes the first head of the agency for justice. These main leading characters of the series uncover the truth, pitted against a huge force holding top position. The series tests their relationship as husband and wife when the secret life of Jung Hyun comes to fore.


Main Cast

Ji Jin Hee as Han Jung Hyun
Yeon Woo Jin as Han Jung Hyun (young)
Kim Hyun Joo as Choi Yeon Soo
Han Sun Hwa as Choi Yeon Soo (young)
Jung Man Sik as Do Young Gul
Park Doo Sik as Do Young Gul (young)
Heo Jun Ho as Im Hyeong Rak

Jung Hyun & Yun Soo’s family

Yoo Sun Ho (유선호) as Han Seung Koo (Jung Hyun & Yun Soo’s autistic son)
Lee Jae In as Han Seung Mi (Jung Hyun & Yun Soo’s daughter)
Park Geun Hyung as Lee Man Ho (Lee Suk Kyu’s father)

National Intelligence Service

Kwon Hae Hyo as Oh Pil Jae
Joo Suk Tae as Park Won Jong
Han Go Eun as Go Yoon Joo / Kim Do Hee
Kyungri as Go Yoon Joo / Kim Do Hee (young)
Nam Sung Jin as Cha Min Ho / Jo Dong Pal
Lee Kyu Bok as Min Ho (young)

Senior Civil Servant Corruption Investigations Agency

Choi Dae Chul as Chu Dong Woo
Lee Han Wie as Bae Goo Taek
Bae Yoon Kyung as Sa Moo Kwan
Kang Young Suk as Jung Chul Hoon

People around Yun Soo

Lee Seung Joon as Kang Choong Mo
Hong Jin Ki as Choong Mo (young)
Choi Kwang Il as Hwang Jung Ho
Im Ji Kyu as Jung Ho (young)
Son Jong Hak as Yoo Sang Dong
Kim Soo Jin as Min Sang Ah
Han Bo Bae as Min Sang Ah (young)


Song Young Kyu as Kwak Moon Heum
Park Jin Woo as Detective Koo
Kim Young Dae as Kim Tae Yul
Cha Soon Bae as Song Moon Bae (Chief Editor at Daehan Jeil Daily)
Jung In Ki as Kim Myung Jae (Secretary General of the Blue House)
Ahn Se Ho as Kim Kwang Chul (an assistant to Do Young Kul)
Shim Hyung Tak as Lee Min Yool (ep 3-4)
Kim Young Woong as subway control room staff (ep 3)
Park Joo Hyung as drug gang boss (ep 4, 11)
Lee Se Na as Kim Da Kyung (ep 4)
Yun Je Wook as loan shark (ep 7)
Sung Byung Sook as Kim Tae Yul’s mother (ep 12)

Production Credits

Production Companies: Story TV, jTBC Studios
Director: Song Hyun Wook
ScriptWriter: Baek Cheol Hyun, Song Ja Hoon, Jung Hye Eun

Episode Ratings

Date Episode AGB TNmS
2021-04-23 1 3.471 -
2021-04-24 2 3.785 -
2021-04-30 3 2.841 -
2021-05-01 4 3.367 -
2021-05-07 5 2.885 -
2021-05-08 6 4.243 -
2021-05-14 7 3.041 -
2021-05-15 8 4.175 -
2021-05-21 9 3.777 -
2021-05-22 10 4.187 -
2021-05-28 11 3.768 -
2021-05-29 12 3.816 -
2021-06-04 13 3.922 -
2021-06-05 14 4.517 -
2021-06-11 15 3.916 -
2021-06-12 16 5.229 -

Sources: TNmS Media Korea & AGB Nielsen Korea (Nationwide)

*** Note: This drama is aired on Pay-TV channel which has fewer viewers than Free-TV channels. So, please don’t be surprised with the low rating. ***


Related Photo

Official Site

Official Trailer
Trailer I
Trailer II

Watch Online in Viki.com (Coming Soon)


  1. 1 : Gemma Says:

    Wow!!!ji jin hee and kim hyun joo again..sooooo excited with their tandem..from I HAVE A LOVER to UNDERCOVER👍👍👍🙌🙌🙌

  2. 2 : Rena Says:

    My favorite combo😁

  3. 3 : Guy Says:

    Where can I watch this in the US? Viki, Netflix?

  4. 4 : Khatron Ke Khiladi 11 Full Episodes Says:

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  5. 5 : Flavia Vieira Says:

    i love Ji Jin Hee !!!!

  6. 6 : Cheorin Says:

    Wow, the arrogance of the NIS is on par with the CIA and FBI in the US. It’s like; how dare you ask how we spend taxpayer dollars. Transparency is for you the elected, not for us. We are establishment; our posts are by appointment; we’re the elites of government you know. Go against us—We have six ways from Sunday at getting back at you. Lol!!!

    They cast the right actor for director of NIS in this drama. He looks like a psychopath with greasy hair and oily skin.

    He put the hit on Choi Yeon Soo because she isn’t someone they want as director of CIO? Wow, this parallels the shenanigans of the IC in the US for the past 5+ years. Lol!!

  7. 7 : László Veszelovszki Says:

    The series is much better, than many people think!

  8. 8 : Tira Says:

    My favorite actor Ji Jin Hee and actress Kim Hyun Joo. At first, the episode was not so interesting but it get more interesting from second episode on. Hopefully Choi Yeon Soo know that her husband is trying to protect her all the time while she is trying to fight against corruption. Let hope that the happy ending that the truth prevail.

    Thank you the actors, actresses, writer and producer for this exciting drama!

  9. 9 : Michael Says:

    From Epi 1 till 14 currently, have been on ma toes…. KDrama🔥🔥👏👏✌️✌️🤩😍🥰🥰… Love the Suspense!!!!

  10. 10 : Aseret Says:

    You can watch iron dramacool

  11. 11 : Aseret Says:

    I meant sorry you can watch this serie on dramacool

  12. 12 : tigerb Says:

    have not watched the original british production, but this series is good to watch

  13. 13 : KdramaFAN Says:

    This show is highly recommended! I’ve enjoyed every episode till the end, very good thriller

  14. 14 : RockyRoad Says:

    From the records here, apparently this drama had already been shown last year. Never mind, what I’m watching must be a repeat.

    Finished watching episodes 1 and 2. I like it. This drama is going to be a good one.

    The rich, powerful and corrupted trying to destroy a husband and wife team of civil rights fighters. Forcing the husband, an ex black special operative, to kill his wife, unknown by her. Children used as bargaining chips. Oh gosh !! No way !!

    I see no way is the husband going to bow down to the such a preposterous request. How is the story going to play out ?? This is what I would like to know ….

    Fighting !!

  15. 15 : RockyRoad Says:

    Ep 3 & 4

    Oh wow, poor family. The enemies did not waste time to make this family’s life miserable. This is just a taste of what the bad guys are capable of. But cross the line baddies, and you will have plenty to answer for. You are dealing with an ex-ace black operative here, and you have “touched” his family.

    To me, I see the baddies as just the older version of the school bullies, no brains, just all brawn, and a much inflated ego. Thinking that their victims are weak just cuz they do not retaliate. Wait, baddies. You have bitten off too much, you will choke. Greedy.

    I am waiting to see how the baddies will end up. They are lucky if they were eventually only to end up in jail. Could be worse. They are messing with the wrong people, Choi Yeon Soo and Han Jung Hyun, are tough veterans in their field of experience.

    The lesson to learn here is : There is always someone higher than us. We are not the ultimate. Dont tempt the devil ….

    At this juncture, its too early to see the the stakes both sides (Han family and Enemies) are fighting for. For now, we have been shown just a little of how hostile the Enemy is. Worse to come.

  16. 16 : RockyRoad Says:

    Wowww … this drama is jammed pack with dialogues, intriguing and exciting situations plus it requires a viewer’s full attention. The story moves very fast. Dont blink your eyes or run to the fridge for food. Or you will miss a “connecting part”. But I luv it. The contents and dialogues are intelligent and make lots of sense.

    My personal opinion is that to do justice to the drama, its better to watch it. Our written review can only cover a certain percentage of the story and action, but not the feel of it. This serious huh? Yes.

    That’s why I have decided that I should not spoil the story with my notes, but to leave it to viewers to feel the drama on their own. Go watch the drama.

    Its a waste that the rating had not climbed high enough which it deserved. (I think it could be because its too packed with infornlmation and viewers are too tired after a day’s work, to want to cramp their brains anymore).

    Have a nice day.

  17. 17 : RockyRoad Says:

    Never mind me …. I am here only to rant and vent my frustrations and anger at Director of CIO Choi Yeon Soo.

    All along she’s been depicted as tough, sharp and street smart. But since she’s discovered her husband’s old secret life as a spy of the NIS, she’s become an idiot. Oh Ouamuamua !! Heavens forbid !!

    Come on … there are so many obvious clues floating around of the presence of her enemies and their dirty work to set her up to fail as Director of CIO. But she is blind to them. Her one track mind now is focused only on her husband’s historical “betrayal” of her … (Enemies’ plan is working. She fell for it).

    Lady, Director, you are now under test as Director of CIO. Wake up ! (Quickly, compartmentalise your mind).

    Is it too late already? You’ve just been fired from your position? Wake up !!

    My gripe with this drama is that the story has been running along fine, until now Eps 11 – 12. And then overnight, the whole of CIO Dept became idiotic. Writernim, what kind of writing is this? Did somebody waved a magic wand and turned CIO into idiots last night? If this kind of magic is possible, I would like such a magic wand too – to wave it on you! 🤬

    We’ll see whether writernim has woken up or not by next week. 👻

  18. 18 : RockyRoad Says:

    Ep 13 & 14

    Finally …. Director CIO came to her senses. Goshhh… it’s high time, before her husband (Han JungHyun) dies from trying to protect her and her idiocy, in secret ……

    These two episodes tell about what might happen to the fate of the CIO and by extention, the fate of the whole nation.

    There is this Tablet that belongs to NIS Chief, Im Hyeong Rak, which contains the financial information that can condemn and convict him. And it was what CIO’s Director’s husband HJH was fighting his life for here, for this very Tablet.

    IHR practically “runs” the country by abusing and manipulating the power he has. He’s so powerful that just as the wooden stake is the one weapon that can only kill Dracula, so it is with the Tablet. Its the “wooden” stake that can destroy IHR. Otherwise, no other means can get close enough to bring him down. IHR will kill to prevent the incriminating Tablet from getting into his enemies’ hands.

    Whilst Director of CIO Choi YeonSoo was sulking and zombieing her way around, unknown to her, lots of life and death incidents were happening to her husband (HJH) because of the Tablet. He got attacked and almost died twice, fighting for possession of the Tablet. IHR’s Personal Aide was killed by IHR for trying to outsmart and cheat him. And IHR was hunting for HJH to kill him and to retrieve his incriminating Tablet. HYH jumped into the Han river …

    Hahaha … trust the ace ex special agent HJH to live up to his reputation. After a fews days in hiding, he snucked home, apprehensive about his beloved wife’s reaction. Hahaha … One loving hug says it all. You are missed and all is forgiven HJH !! Welcome home !! Hahaha !!

    (Writernim, you are forgiven too for Ep 11 and 12).

    Meanwhile, lets patiently wait for next week to come …… QUICK !!.

  19. 19 : RockyRoad Says:

    So the Finale week did come and gone … and here I am wondering what happen ….? Was that all?

    I find the ending too simplistic for a story of corruption and crimes of this magnitude.

    Fine, the ending for CIO Director and family was a good one. No complaints. Their family remains intact and safe, and as loving as ever. The most ideal family anyone could wish for, thanks to the dedication of a father and husband like HJH. He’s a rare gem in today’s world.

    As for IHR, the most corrupted and evil one, I feel that some mention should be made of his fate, now that he’s caught? But no, we were not told. Life sentence? Death sentence ? Etc, etc.

    Hahaha … another thing, IHR must have led a blessed life. A miracle? For a person he did not die or suffered any form of life threathening damage after a fall from a great height (from a building to be exact)? I would think for someone else, they would have physically been re-arranged already.

    (Yeah, k-drama to the extreme … miracles do happen).

    And what about the rest of the corrupted govt officials and politicians (guess no less than 50) ? They were listed in the Tablet p.c. Its natural that people would like to know what their punishments were. But there were no mention at all.

    In conclusion, to me, the ending was rather bland. It would have been great if we knew what the fates of the corrupted and evil were.

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