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Title: 군주 – 가면의주인 / Ruler: Master of the Mask
Chinese Title: 君主-假面的主人
Also Known as: Monarch
Genre: Historical, Political, Romance
Episodes: 40 (30 minutes/episode)
Broadcast network: MBC
Broadcast period: 2017-May-10 to 2017-July-13
Air time: Wednesdays & Thursdays 22:00 (2 episodes back-to-back)


This is a pre-produced drama. Filming began on 2016-December.

Set in the 18th-century Joseon, it tells the story of Crown Prince Lee Sun (Yoo Seung Ho) and his fight against a powerful and wealthy organization Pyunsoo-hwe that controls the country behind the scenes due to its monopoly of the nation’s water supply. With the help of the woman he loves named Han Ga Eun (Kim So Hyun), Lee overcomes adversity and grow as a just ruler.


Main Cast

Yoo Seung Ho as Crown Prince Sado Lee Sun
Kim So Hyun as Han Ga Eun
L as commoner Lee Sun
Yoon So Hee as Kim Hwa Goon
Heo Joon Ho as Dae Mok
Park Chul Min as Woo Bo (Lee Sun’s teacher)

People around Crown Prince

Shin Hyun Soo as Lee Chung Woon
Bae Yoo Ram as Park Moo Ha
Lee Chae Young as Mae Chang

Pyunsoo Party

Kim Byung Chul as Kim Woo Jae
Kim Jong Soo as Joo Jin Myung
Do Yong Goo as Choi Sung Gi
Jung Kyu Soo as Heo Yoo Gun
Kim Young Woong as Jo Tae Ho
Kim Seo Kyung as Gon
Park Ki Ryung (박기륭) as Mr. Jang
Jo Seung Yun

Family of commoner Lee Sun

Park Hyun Sook as Yoo Sun Daek (mother)
Jung Hae Kyun as father
Go Na Hee as Kko Mool (younger sister)

Royal Palace People

Kim Myung Soo as King Yeongjo
Kim Sun Kyung as Consort Yeong
Choi Ji Na as Queen Jeongseong
Jung Doo Hong as Lee Bum Woo
Song In Gook (송인국) as Hyun Suk
Jung Ah Mi as Court lady Han
Lee Dae Ro as King’s eunuch


Jun Noh Min as Han Kyu Ho
Jin Ki Joo as Choi Kang Suh
Kong Jung Hwan
Min Pil Joon (민필준)
Kim Ho Jin
Lee Ki Young
Uhm Hyo Sup
Uhm Seo Hyun
Kim Jong Goo

Production Credits

Production Company: People Story Company, Huayi’s Brothers
Planner: Kim Kyung Hee
Producers: Jung Chan Hee, Bae Jung Hoon, Shim Jung Woon
Directors: Noh Do Chul, Park Won Gook
Screenwriter: Park Hye Jin, Jung Hae Ri


2017 MBC Drama Awards: Popularity Actress – Kim So Hyun (Ruler: Master of the Mask)
2017 MBC Drama Awards: Popularity Actor – Kim Myung Soo (Ruler: Master of the Mask)
2017 MBC Drama Awards: Fighting Spirit Acting Award – Kim Myung Soo (Ruler: Master of the Mask)
2017 MBC Drama Awards: Golden Acting Actress (Mini-Series) – Kim Sun Kyung (Ruler: Master of the Mask)
2017 MBC Drama Awards: Top Excellence Actor (Mini-Series) – Yoo Seung Ho (Ruler: Master of the Mask)

Episode Ratings

    Nationwide Seoul Nationwide Seoul
2017-05-10 1 8.8 (9th) 10.0 (5th) 9.7 (6th) 10.5 (5th)
2017-05-10 2 10.1 (6th) 10.9 (4th) 11.6 (4th) 12.1 (4th)
2017-05-11 3 10.4 (8th) 11.5 (6th) 10.5 (6th) 11.2 (5th)
2017-05-11 4 10.8 (6th) 11.9 (5th) 12.6 (4th) 13.4 (4th)
2017-05-17 5 8.5 (12th) 10.4 (6th) 11.2 (5th) 11.8 (5th)
2017-05-17 6 9.2 (10th) 11.0 (5th) 12.5 (4th) 12.9 (4th)
2017-05-18 7 10.4 (6th) 11.8 (5th) 12.0 (5th) 12.9 (5th)
2017-05-18 8 11.6 (5th) 13.1 (4th) 13.4 (4th) 14.2 (3rd)
2017-05-24 9 10.6 (8th) 10.9 (6th) 11.9 (6th) 12.7 (5th)
2017-05-24 10 11.7 (6th) 12.6 (4th) 13.8 (4th) 15.2 (3rd)
2017-05-25 11 11.1 (7th) 11.7 (5th) 12.1 (6th) 13.2 (5th)
2017-05-25 12 12.3 (5th) 13.3 (4th) 13.8 (4th) 15.1 (3rd)
2017-05-31 13 11.8 (6th) 13.8 (4th) 11.7 (6th) 12.2 (4th)
2017-05-31 14 12.8 (4th) 15.7 (3rd) 13.6 (3rd) 14.5 (3rd)
2017-06-01 15 12.0 (6th) 14.5 (5th) 12.0 (6th) 12.6 (5th)
2017-06-01 16 13.4 (5th) 15.8 (2nd) 13.6 (4th) 14.2 (3rd)
2017-06-07 17 11.6 (6th) 13.0 (5th) 10.9 (7th) 11.0 (6th)
2017-06-07 18 12.4 (5th) 14.0 (3rd) 11.9 (5th) 11.6 (5th)
2017-06-08 19 11.0 (7th) 13.0 (5th) 11.2 (6th) 11.2 (6th)
2017-06-08 20 11.4 (6th) 14.0 (4th) 12.2 (5th) 12.1 (5th)
2017-06-14 21 11.8 (5th) 13.0 (5th) 11.3 (5th) 11.8 (5th)
2017-06-14 22 13.0 (4th) 14.5 (2nd) 13.0 (4th) 13.8 (3rd)
2017-06-15 23 10.3 (5th) 11.3 (5th) 11.3 (5th) 11.3 (5th)
2017-06-15 24 12.0 (4th) 13.2 (3rd) 13.4 (4th) 13.2 (4th)
2017-06-21 25 10.3 (8th) 11.5 (5th) 10.6 (6th) 10.8 (7th)
2017-06-21 26 11.8 (5th) 13.0 (4th) 13.2 (4th) 13.5 (5th)
2017-06-22 27 10.0 (9th) 11.9 (5th) 10.8 (6th) 11.4 (5th)
2017-06-22 28 11.6 (5th) 14.1 (3rd) 12.2 (4th) 12.4 (4th)
2017-06-28 29 9.6 (7th) 11.0 (5th) 10.1 (6th) 10.1 (5th)
2017-06-28 30 11.2 (4th) 13.7 (3rd) 12.2 (4th) 12.3 (4th)
2017-06-29 31 10.5 (6th) 12.6 (4th) 11.9 (5th) 11.9 (5th)
2017-06-29 32 12.2 (4th) 14.5 (2nd) 14.4 (4th) 14.6 (3rd)
2017-07-05 33 12.1 (6th) 12.2 (5th) 12.6 (5th) 13.3 (5th)
2017-07-05 34 14.0 (4th) 14.6 (3rd) 13.6 (4th) 14.5 (4th)
2017-07-06 35 12.9 (5th) 15.2 (4th) 12.8 (5th) 13.5 (5th)
2017-07-06 36 14.7 (4th) 16.6 (3rd) 14.9 (3rd) 15.2 (2nd)
2017-07-12 37 15.5 (5th) 18.0 (2nd) 13.2 (5th) 13.9 (5th)
2017-07-12 38 17.6 (3rd) 20.3 (1st) 14.5 (4th) 15.2 (2nd)
2017-07-13 39 14.4 (5th) 16.1 (4th) 13.3 (5th) 13.5 (5th)
2017-07-13 40 16.0 (3rd) 18.4 (2nd) 14.4 (3rd) 14.7 (3rd)

Sources: TNmS Media Korea & AGB Nielsen Korea

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


Related Photo

(Other Photo from Official Site)

Official Site

Official Trailer
Trailer I
Trailer II
Trailer III
Trailer IV
Trailer (Yoo Seung Ho’s version)
Trailer V
3 minutes preview

Watch Online in Viki.com

Watch Online in Dramafever.com

165 Responses to “Ruler: Master of the Mask”

Pages: [1] 2 3 4 » Show All

  1. 1
    priya Says:

    finally!. waiting for a long time. awesome cast and trailer. but still have to wait 🙁

  2. 2
    Tranglyy Says:

    my love …<

  3. 3
    OK OK OK Says:

    i like these 2 leads partner each other. 😛

  4. 4
    Nana Says:

    Omo OMo Omo, I can barely wait for this drama. 😍😍😍😍😍😍😍😍😍😍😍😍

  5. 5
    Iamjuncci Says:

    My favorite leads… Yess…waiting!!!

  6. 6
    tigerb Says:

    i wonder if the story is based on real history

  7. 7
    conan Says:

    it’s nice to finally see you again Yoo Seung Ho 🙂

  8. 8
    Hannah Says:

    Love all four main casts!! Can’t wait for this drama!

  9. 9
    Ruler: Master of the Mask, o novo drama histórico da MBC Says:

    […] Fonte: Koreandrama […]

  10. 10
    CoolBeans Says:

    A set of great leads and supporting cast members! This is the only drama I am looking forward to seeing in the next month. Only the script can ruin this!

  11. 11
    hks Says:

    Can’t wait….

  12. 12
    Kim So Hyun x Yoo Seung Ho Says:

    The lead casts are my bias…. Love them both, i hope this drama will besar hyped…. Can’t wait them on screen… Love them afterall

  13. 13
    kyochan Says:

    1lead, 2lead smuanya biasku 😆😘😘 jadi bingung kan pilih yang mana..
    gak sabar pengen cepet cepet nonton nih drama 😘😘😘

  14. 14
    N Says:

    It’s been a long time YSH, will finally get to watch another drama of him again. Such a good actor. Looking forward to this!

  15. 15
    jesca Says:

    This is so funnnnn only 3 days am on my toes waiting for it
    I ve waited lyksince last year

  16. 16
    Erny Apriyani Says:

    Yoo Seung Ho come back againn !!! can’t waittt ^^

  17. 17
    Saimdang Says:

    The first 2 episodes . . . most enjoyable. Good casting. Fresh story. Love it.

  18. 18
    ignore me Says:

    40 episodes!? I think this drama would be 20 episodes…. Need extra Times to wait patiently and start to watch its drama.

  19. 19
    widya Says:

    @18 actually its 20 eps … its being break down to 2 parts each episodes

  20. 20
    Susy indrayanti Says:


  21. 21
    ruler Says:

    I watching this drama because of 2nd lead actor INFINITE’s L/Myungsoo.INTERESTING PLOT.

  22. 22
    Ashley Says:

    Why people are saying 40 episodes is beyond me, it’s really just 20 episodes in total (2x 30min) with a big commercial break in-between.

  23. 23
    hana_goh Says:

    i like like like it very much! Good act yoo seung ho! aii..

  24. 24
    DeeAn Says:

    I’ve been watching 4th episodes. And It was interesting story. This gonna be great drama this year . ^_^

  25. 25
    MaxT Says:

    This drama has a very interesting plot and first 4 episodes were great.

    Highly recommended. 9/10

  26. 26
    Simon K Says:

    This is one of the few Korean period dramas that do not follow real history and I think it is a good thing, this give the writers more freedom for story plot. After 4 episodes, I think this will be a great drama. As I stated somewhere else, MBC produce great period dramas.

  27. 27
    Vanessa Says:

    The only downfall about this show is I hate that they had to cut the episodes in half for financial reasons. After watching episode 1 I was so confused I was like yelling at my tv saying “what the fck” that was until I figured out that it was cut in half and I had to watch part 2 of episode 1. I remember saying “what the fck is this mess?” I feel like it is beyond irritating to have to be stopped in the middle of the show to play the freaking next part!! (-_______-)

  28. 28
    Lemon Says:

    Love this drama. Sheung Ho is great actor. I can feel his character in this drama. Keep watching him since he small and now become so handsome. Hopefully this drama will be 1-rank. Cant wait for ep 7..

  29. 29
    Joy Says:

    I am soooo loving this…

  30. 30
    Jenna Says:

    Loved this drama
    The chemistry of the lead actor n actress are wow 😍😍

  31. 31
    tosca Says:


  32. 32
    Freedomdemon Says:

    after watch the 1st episode, had look forward to the keep go on story~!!!!!
    also thankfully of this drama release 4 episode in a week~!!!
    * Wednesdays & Thursdays 22:00 (2 episodes back-to-back)
    hahahaha~~~~ (*v *)

  33. 33
    Vi2n Says:

    Mudah2an aku salah..aku asal nebak mungkin putera mahkota (pengganti) akan merebut tahta putera mahkota yg asli krn mereka menyukai han ga eun. Dalam pembunuhan ibu putra mahkota di dalangi ibu suri.

  34. 34
    yuewe Says:

    30 minutes per 2 episode back to back like My Sassy Girl it means 20 episode only.

  35. 35
    Hannah Says:

    This drama is so good! I can’t seem to predict at all what’s going to happen next!

  36. 36
    Mangali-nepal Says:

    I loved this drama a lot

  37. 37
    lemon Says:

    Yeah hwaiting!! give rating up to 40%

  38. 38
    Kim Says:

    This drama is from 3 dramas: The Moon That Embraces The Sun, Moonlight Drawn by Clouds & Scarlet: Moon Lovers.
    It doesn’t make sense that you could kill the King and there is no issue.
    Actually I always like to watch saeguk drama from MBC such as Dong Yi & The Moon That Embraces The Sun. But, this time I would like to say this is a poor concept 🙁

  39. 39
    tigerb Says:

    a direct time slot competition is ‘two episodes back to back’, same as this one. to me it’s annoying when it can be aired in one stretch.

  40. 40
    Hannah Says:

    I also thought that how is it there are no consequences at all after killing the King? I thought it’s an act of treason. But then again, I remembered that most of the ministers and even the chief magistrate is under Dae Mok. And the chief royal guard was killed, so I assume they change the story of how the King died. Plus, the Crown Prince is the poor Lee Sun and becomes the puppet of Dae Mok, so there’s no one to actually gives order to royal guard or magistrate that Dae Mok had done treason.

  41. 41
    Hannah Says:

    This is one of the few dramas that I actually prefer second heroin than the heroin itself. Hwa Gon has better character and saves Lee Sun a lot of times. I’m more impressed that she could be in the merchant business without her grandfather’s help at all. She hates that Dae Mok tried to kill His Majesty, her love, and she abandoned him and left with Gon.

  42. 42
    Robinof The Forest Says:

    @hannah. At first i like her too, but you should notice, we dont know hwa gon moral limit. She is the one who just because of her curiosity causing lee sun the fake king’s father death by telling the big bodyguard guy to punish water stealer. Anyone would push away who take her precious thing away from her, that is why she leave her grand father…just for awhile..And we ll see she may cause harm to han ga eun because of jealousity. She is different from Han ga eun who has a kind heart. Even though she is not a strong woman, she s fighting her best to protect her people by motivating, support and lead them. The difference is Hwa gon acts base on her romantic feeling, but Han ge eun acts base on what she has to do for the other people best, and she has a great heart.

  43. 43
    sanjinyeon Says:

    While watching this, suddenly I remember another story of Rebel, Yoo Seung Ho is like Yun Kyun Sang their both peddlers in the Joseon era, their both like Robinhood and their both really cute in their long hair. Anyway the story of Rebel and this one are both nice and worth to watch.

  44. 44
    Sarang Says:


  45. 45
    Beautiful Says:

    I just love this drama a lot
    Hope to see a kissing sence between the lead 😘😘

  46. 46
    charlotte Says:

    This drama is so wow can’t wait to watch this. I really love it

  47. 47
    Kyu Says:

    This drama is highly recommended!
    Besides yoo seung ho good acting skill, his chemistry with kim so hyun is so undeniable! Sadly, Seems like MBc didn’t give them much romance scene in this drama:(,I hope next episode MBC will give them much romance scene like others drama , cant wait to looking forward for the next episode, aaah~ and so drooling with their upcoming kissing scene ♡♡

  48. 48
    Hannah Says:

    Ohhh this drama is so good! Good old love rectangle is something that I like. I don’t need kissing scenes or whatever, the storyline itself is already good that I love the tension between all the main casts.

    I think I can say all the main casts (Yoo Seung Ho, Kim So Hyun, Yoon So Hee and L) did a good job. Their acting skills are just superb. I love all four of them! ❤️

  49. 49
    Hannah Says:

    And I still haven’t moved on with my bias towards Hwa Gon. In ep 14, I feel sad for her as she had to choose betwen family and love. As much as I hate that she betrayed Lee Sun, I’m still glad that she chose family over love eventhough her family is the bad one. I could see how hurt she was betraying Lee Sun. She’s just unlucky to be born as Dae Mok’s granddaughter.

  50. 50
    fb Says:

    two lead are goog to each other

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