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

Supporting Cast

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

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

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

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        
2017-06-28 30        
2017-06-29 31        
2017-06-29 32        
2017-07-05 33        
2017-07-05 34        
2017-07-06 35        
2017-07-06 36        
2017-07-12 37        
2017-07-12 38        
2017-07-13 39        
2017-07-13 40        

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

123 Responses to “Ruler: Master of the Mask”

Pages: « 1 2 [3] Show All

  1. 101
    Hannah Says:

    I love Kim So Hyun; I think I watch most of her dramas, but in this drama, I don’t find myself liking Ga Eun’s character. Hwa Gon seems to outshine Ga Eun, to be honest. I feel sad when Hwa Gon confessed her love toward Crown Prince.

  2. 102
    Oppa Says:

    My poor ga eun
    Same here I too feel bad for her character
    I am a huge fan of her since I watch her in I miss you
    Plz writer be good to her

  3. 103
    Happy Says:

    The character I love most rite now is Yoo seung ho
    I feel sad when he crys
    My poor Ga eun I feel really bad for character begin pro cast badly here.
    The second lead actress she could have shown better emotion then the same repeating expression always
    And the fake king thoug he betrayed the real cp
    I still like him.. his acting has been improving a lot

  4. 104
    Hannah Says:

    I knew it I knew it that the royal guard seems suspicious!!!! I knew that he’s with Dae Mok all along. He seemed suspicious from the very beginning when he saved fake King from killing himself, why would he follow the fake King secretly? And how on Earth Dae Mok knew that Lee Sun would meet with his family if not his “most-trusted” royal guard?

    And what’s up with fake Lee Sun being all annoying just because of a girl? I guess bros before hoes do not exist in Joseon era. Huhh

  5. 105
    Wonder Woman Says:

    Can’t wait to kick dae mok ass
    Writer plz show some mercy
    No more crying scene

  6. 106
    Juggy Says:

    Omo ni can’t wait for the next episode
    I really really feel bad for ga eun character
    She suppose to be strength for cp and should showing for strong scene but instead only can see begin poorly potray

  7. 107
    Jenna Says:

    Yoo seung ho oppa sarangaeho
    Nomu nomu chu haeyo
    O ghosh I have really like after watching this drama
    My heart hurts whenever I see you cry

  8. 108
    Lol Says:

    How can this fake king be so stupid
    It really hurt my feeling when he’s begin foolish
    Afterall love is to be in fool
    Can’t wait for the next episode
    What go Bg to happen next omo

  9. 109
    Cry baby Says:

    The last episode was so painful I cry cry 😭

  10. 110
    Kpop fan Says:

    I really don’t understand why my so hyun is feeling in a weak character whereas the second lead is one is good 😭

  11. 111
    Miss You Says:

    Viewers is dropping
    Due to poor character in Ga eun role
    Where she suppose to play strong instead of weak

  12. 112
    Jenna Says:

    No matter what
    You have really played it so well
    We all know you are hard working person
    I want to see in top of the world
    Fighting so hyun

  13. 113
    Mangali Says:

    Yoo seung ho
    I have fallen for you❤️

  14. 114
    Sally Says:

    When lee sun met Ga eun
    It was a beautiful moment
    Really keen to see them again another drama 😍☺️

  15. 115
    Gigi Says:

    Now what is going to happen in next episode
    O god just can’t wait for this Wednesday
    Please check me soooooon

  16. 116
    Nepali_girl Says:

    I’m from Nepal
    I am a huge huge fan of Kpop drama
    Rite now I’m onto this lead actress name Kim so hyun
    At first I use to hate her in the moon that embrace the sun later on watching I miss you
    I became huge fan of her ❤️❤️❤️

  17. 117
    Maria Says:

    I just can feel their pain 😭😭😭

  18. 118
    Farah Says:

    I just don’t like that second lead actress
    She just has no exprsessions on her face
    Just the same emotion on her face all the time 😑😑

  19. 119
    silverswan Says:

    One of the best Historical drama this year, though it is short and until Episode 28, it was all the way exciting and with all so good actors and actresses this really a good drama among so many. Looking forward to the last few episodes and hope we do not have to wait too long for the 12 more episodes
    Thank you for making such a great drama , really enjoyed watching

    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

  20. 120
    Hahaha Says:

    Finger cross
    Hope for a strong character this tym for Ga eun
    No more crying
    It hurts

  21. 121
    Jean Says:

    I really love this couple
    CP and Ga eun
    Both are just so adorable 😘❤️

  22. 122
    Kim shim Says:

    This drama has taken my heart ❤️

  23. 123
    Maya Says:

    I’m shipping this couple
    They are both so talented
    I really love them both
    Yoo seung ho oppa and Kim so hyun

Pages: « 1 2 [3] Show All

Leave a Reply

Follow us on

Facebook Twitter RSS Feed


Facebook Twitter RSS Feed

Upcoming Drama

Ongoing Drama

Recently Completed Drama

Browse Drama By Year