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Title: 써클 : 이어진 두 세계 / Circle
Chinese Title: Circle:相連的兩個世界
Also known as: Circle: Two Connected Worlds
Genre: Sci-fi, Mystery
Broadcast network: tvN
Episodes: 12
Broadcast period: 2017-May-22 to 2017-June-27
Air time: Mondays & Tuesdays 23:00


Set in the present (2017) and the future (2037), the story is about an alien invasion in 2017 and the subsequent new Earth in 2037; which is separated into the “Smart Earth” where people’s emotions are controlled and no crimes and illness exist, and the “General Earth” where people still suffer from rampant plague and lawlessness.


Main Cast

Yeo Jin Goo as Kim Woo Jin (Beta Project)
Jung Ji Hoon as Kim Woo Jin (child)
Kim Kang Woo as Kim Joon Hyuk (Brave New World)
Gong Seung Yun as Han Jung Yun (Beta Project)
Lee Ki Kwang as Lee Ho Soo (Brave New World)
Ahn Woo Yeon as Kim Bum Kyoon (Beta Project)
Kim Ye Joon as Kim Bum Kyoon (child)
Jung In Sun as Park Min Young (Beta Project)

People around Woo Jin (Beta Project)

Seo Hyun Chul as Hong Jin Hong
Oh Ui Shik as Lee Dong Soo
Jung Joon Won as Dong Soo (Child)
Shin Dam Soo as Detective Choi
Kim Joong Ki as Kim Gyu Chul

Handam University people (Beta Project)

Song Young Kyu as Han Yong Woo
Han Sang Jin as Park Dong Gun
Shin Joo Hwan as Sunbae Lee

General District people (Brave New World)

Seo Hyun Chul as Hong Jin Hong
Oh Ui Shik as Lee Dong Soo
Kim Min Kyung as Doctor Park
Kwon Hyuk Soo as Detective Oh

Smart District people (Brave New World)

Min Sung Wook as Lee Hyun Suk
Nam Myung Ryul as Yoon Hak Joo
Yoo Young as Secretary Shin
Choi Ji Hun as Kim Min Ji
Gong Seung Yun as Bluebird


Son Dong Hwa as entourage
Park Myung Hoon as man having affair
Park Ji Ah as woman waiting for bus (cameo)
Kim Ji Sung as Kim Nan Hee (cameo)
Jung Suk Won as Chief Director Nam (cameo)
Noh Haeng Ha as Older Sister Kim (cameo)
Choi Sung Jae as control team leader (cameo)

Production Credits

Production Company: tvN, Studio Dragon, KPJ
Production Planner: Lee Myung Han
Chief Producer: Park Sung Jae
Producers: Choi Jin Hee, Jang Jin Wook
Director: Min Jin Ki
Assistant Directors: Jun Min Ho, Noh Jung Hoon, Park Hyung Won, Wi Seung Yun, Kim Geum Nan
Editors: Na Hee Soo, Jun Mi Sook
Cinematographers: Choi Sung Tae, Park Sung Young
Music Director: Kim Soo Jin
Screenwriters: Ryu Moon Sang, Kim Jin Hee, Yoo Hye Mi, Park Eun Mi

Episode Ratings

Date Episode AGB TNmS
2017-05-22 1 2.883 2.7
2017-05-23 2 2.337 2.1
2017-05-29 3 2.133 2.2
2017-05-30 4 2.630 2.3
2017-06-05 5 1.702 2.0
2017-06-06 6 2.258 2.6
2017-06-12 7 2.053 2.0
2017-06-13 8 1.866 2.2
2017-06-19 9 1.587 2.1
2017-06-20 10 1.820 2.0
2017-06-26 11 2.160 1.9
2017-06-27 12 2.455 2.2

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

*** Different between TNmS Media Korea & AGB Nielson – Here

*** 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

(Other Photo from Official Site)

Official Site

Official Trailer
Trailer I
Trailer II
Trailer III
Trailer IV
Trailer V
Trailer VI

Watch Online in Viki.com

Watch Online in Dramafever.com


  1. 1 : Nana Says:

    Omo Omo Omo, my baby Yeo Jin Goo. I can barely wait for this drama.😘😍😍😍

  2. 2 : MINOZ Says:

    wow can’t wait

  3. 3 : tigerb Says:

    let’s see how this pans out as the gist of the plot is nothing new.

  4. 4 : ai ai Says:

    gong seung yeon fightinggggg

  5. 5 : Circle, o novo drama de mistėrio e suspense da tvN Says:

    […] Fonte: KoreanDrama […]

  6. 6 : CoolBeans Says:

    This is very intense from the opening scenes. Expecting lot of sci-fi and less romance. It is more like two time period in history rather than two worlds like “W” drama. Better yet, it is like the couple from Xfiles had 2 boys. One grew up to be DeCaprio in Inception (movie) and the other became a cop like Harrison Ford in Blade Runner. LOL

  7. 7 : lclarakl Says:

    I have to say that this drama has really grabbed my attention. I want to know what’s going on.

  8. 8 : Myung Says:

    This drama is excellent and outstanding. I absolutely love it. The story line and the actors are all fantastic. I can not wait for episodes 5 & 6 (next Mon/Tue). OMG I am counting the days.

  9. 9 : MaxT Says:

    I don’t like it. I got bored after 20 minutes and couldn’t finish episode 1.

  10. 10 : Piddy Says:

    my head spinning…. This drama so fantastic!!!!!!!

    Can anybody tell me what is name of the song in the end of the episode??? pls HELP

  11. 11 : sanjinyeon Says:

    I think Circle is only 12 episode but due to intense thriller and suspense in every episode since day 1, I felt like watching a 30 episode kdrama, and you have to focus in every details of what they are saying or else you will be lost. I’m having a brain drain after each episode but still worth it to watch

  12. 12 : Douglas Jin Goo Says:

    This drama is awesome
    So far the best drama of 2017

  13. 13 : D. Min Says:

    Favourite drama
    So sad it will end tomorrow
    100% recommended

  14. 14 : sanjinyeon Says:

    it’s a must watch kdrama, it’s only 12 episode but this is enough to work all your brain cells while watching it, it’s really worth it.

  15. 15 : es Says:

    I just finished watching this drama..it’s a wow…you did a excellent job Circle casts…actors and actresses did a excellent act…love this drama… a big round of applause 👏👏👏😍😍😍

  16. 16 : heynie Says:

    Finished watching Circle today. Very good story and great acting, esp YJG. He did a great job. It’s worth to watching.

    Just like Signal, it’s an open ending. Will it be another season?

    Waiting for Signal and Circle season 2.

  17. 17 : Leman K Says:

    Beta Project? Brave New World? Am I the only one here who think that those name sounds like agencies name.. 😂😂 I mean.. For artist, entertrainer or trainee 😂😂

  18. 18 : Pomelrain Says:

    Excellent drama. Weird that it did not rate well. I love romcoms but even if this drama only has so little romance, i did not care because it is so gooooood. No boring moments. Can’t help but wonder if there will come a time where we can really have those clear phones and VRs to talk like in person.

  19. 19 : Pearl Says:

    Just finished watching this drama. Yeo Jin Goo is WOW. He’s so handsome. I just realized that he was on drama “I miss you”. He’s so charming right now, his acting is good. I can’t take my eyes off of him. Lol.
    The storyline is unique. All cast are good looking. Gong Seung Yun is new face for me, she’s pretty and I love her brown eyes.
    But, one thing I can’t understand. The ending is not my expectation, I still wonder about Yeo Jin Goo’s cloning and where does Gong Seung Yun came from? Hopefully, there’s more episodes and the storyline is clear.
    But at last, it’s not bad to watch it.

  20. 20 : shave Says:

    I am regular reader, how are you everybody? Thіs piece of writіng рostеd at this web site is in fact fastidiouѕ.

  21. 21 : lani Says:

    confuse with final story, and bored sepertinya ceritanya belum finish

  22. 22 : Yssa Says:

    Hi do you know guys where I could watch this series? Thank you

  23. 23 : Kay Says:

    Circle is a phenomenal drama! It has an intricate sci-fi story that is filled with thrills from start to finish. Yeo Jin Goo and the rest of the cast were amazing. This drama is well done in every way and not to be missed 🙂

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