6 user 22 critic

Monstrum (2018)

Mulgoe (original title)
Yoon Gyeom is a loyal subject of King Jung Jong of Joseon. He struggles to fight against a monster that threatens King Jung Jong's life and a group of people trying to depose King Jung Jong.


Jong-ho Huh


Jeong-uk Byeon (story) (as Jeong-uk Byeon), Heo-dam (screenplay) (as Dam Heo) | 2 more credits »
1 win. See more awards »


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Credited cast:
Myung-Min Kim ... Yoon Gyeom
In-kwon Kim ... Sung Han
Hyeri Lee Hyeri Lee ... Myung
Woo-sik Choi ... Heo
Sung-woong Park ... Jin Yong
Hee-soon Park ... King Jungjong
Kyeong-yeong Lee ... Sim Woon
Kyu-bok Lee Kyu-bok Lee ... Mo-gae
Rest of cast listed alphabetically:
Won-hee Jo Won-hee Jo ... High ranking government officer
Joon-Bum Kim Joon-Bum Kim ... Peddler 1
Min-Seok Kim Min-Seok Kim
Min-soo Sung Min-soo Sung ... Government post Sangsun
Hee-Myoung Yang Hee-Myoung Yang ... Peddler 1
Byeong-hee Yoon Byeong-hee Yoon ... Eunuch 1 (as Byung-Hee Yoon)


Yoon Gyeom is a loyal subject of King Jung Jong of Joseon. He struggles to fight against a monster that threatens King Jung Jong's life and a group of people trying to depose King Jung Jong.

Plot Summary | Add Synopsis


An ancient man-eating monster awakens.


Not Rated | See all certifications »

Parents Guide:

View content advisory »


Official Sites:

Finecut [South Korea]


South Korea



Release Date:

12 September 2018 (South Korea) See more »

Also Known As:

Jakseoui Byeon See more »

Filming Locations:

Seoul, South Korea

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

1.85 : 1
See full technical specs »

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User Reviews

Hyeri of Girl's Day is in this movie!
3 February 2019 | by sleeping_tigerSee all my reviews

I heard about Monstrum early 2018 from news that Lee Hyeri, one of the singers from now disbanded Girl's Day (K-Pop girl group), was going to be making her big screen film debut by starring in this film. When I heard it was going to be an action-horror, my interest was piqued. Honestly, the main reason I watched this movie is because of Lee Hyeri. I was pleasantly surprised she was given the female lead role, and did a very good job acting. The movie is a period piece, but it's not just an action-horror. There's elements of mystery and thriller, and even some comedy too. The movie had a nice pace with no dull moments. I really liked the fact that there was no forced romance either. It was kept to just a few lines too. There were a few instances where scenes connect abruptly, with no segue. It was annoying but it doesn't ruin the story. My other gripe, which is a big one, is none of the main characters ever suffer anything tragic. A few dramatic moments, cuts, scrapes, bruises, and some hurt feelings. That's it. Regardless, it was still an entertaining movie. I hope Lee Hyeri will have similar roles in the future, as she did a superb job in this one. It saddens me that Girl's Day has disbanded, as they were one of my favorite K-Pop groups. But at least I get to see the next chapter in one of the member's life.

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