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Submersion

Original title: Daehongsu
  • 2025
  • TV-MA
  • 1h 49m
IMDb RATING
5.4/10
13K
YOUR RATING
POPULARITY
14
8
Submersion (2025)
A disastrous great flood sweeps the planet. On what may be the last day on Earth, a desperate fight ensues to save a child from a flooding apartment.
Play trailer1:46
3 Videos
39 Photos
KoreanDisasterActionAdventureDramaSci-Fi

A disastrous great flood sweeps the planet. On what may be the last day on Earth, a desperate fight ensues to save a child from a flooding apartment.A disastrous great flood sweeps the planet. On what may be the last day on Earth, a desperate fight ensues to save a child from a flooding apartment.A disastrous great flood sweeps the planet. On what may be the last day on Earth, a desperate fight ensues to save a child from a flooding apartment.

  • Director
    • Byung-woo Kim
  • Writers
    • Byung-woo Kim
    • Moisés Velasco
  • Stars
    • Kim Da-mi
    • Park Hae-soo
    • Kwon Eun-sung
  • See production info at IMDbPro
  • IMDb RATING
    5.4/10
    13K
    YOUR RATING
    POPULARITY
    14
    8
    • Director
      • Byung-woo Kim
    • Writers
      • Byung-woo Kim
      • Moisés Velasco
    • Stars
      • Kim Da-mi
      • Park Hae-soo
      • Kwon Eun-sung
    • 311User reviews
    • 31Critic reviews
  • See production info at IMDbPro
  • Videos3

    Official Trailer
    Trailer 1:46
    Official Trailer
    Official Teaser
    Trailer 1:31
    Official Teaser
    Official Teaser
    Trailer 1:31
    Official Teaser
    Clip - Risking her life to save her son
    Clip 1:57
    Clip - Risking her life to save her son

    Photos39

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    + 33
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    Top Cast21

    Edit
    Kim Da-mi
    Kim Da-mi
    • Koo An Na
    Park Hae-soo
    Park Hae-soo
    • Hee-jo
    Kwon Eun-sung
    Kwon Eun-sung
    • Ja In (An Na's son)
    Yuna
    Yuna
    • Lee Ji Su
    Kim Min-Gwi
    • Mi Jeong (Looter)
    Ahn Hyun Ho
    • Apt. 1503 resident
    Kim Kyu-na
    • Apt. 304 Resident
    Jung Min-joon
    • Apt.304 resident
    Park Mi-hyeon
    Park Mi-hyeon
    • An Na's mother
    Lee Dong-chan
    Lee Dong-chan
    • Apt. 2002 resident
    Lee Hak-joo
    Lee Hak-joo
    • Sin Ga Won
    Park Byeong-eun
    Park Byeong-eun
    • Lee Hwi So
    Jeon Hye-jin
    Jeon Hye-jin
    • Im Hyeon Mo (An Na's superior)
    Park Ji Won
    • Deaconess
    Jo Seung-yeon
    • Apt. 702 resident
    Kim Su-Kyung
    • Apt. 304 resident
    Seo Suk-gyu
    • Apt. 304 resident
    • (as Seo Suk-Kyu)
    Jung Hyun Chul
    • Apartment Resident
    • Director
      • Byung-woo Kim
    • Writers
      • Byung-woo Kim
      • Moisés Velasco
    • All cast & crew
    • Production, box office & more at IMDbPro

    User reviews311

    5.413.2K
    1
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    10

    Featured reviews

    5sami2005

    Promising Start, Confusing Finish

    The Great Flood begins on a strong note, drawing the viewer in with an engaging and suspenseful opening. The early scenes set up an interesting premise and create real curiosity about where the story is headed. However, as the film progresses, it gradually loses focus. The narrative becomes overly long, unnecessarily complicated, and increasingly confusing. Subplots pile up without clear direction, and the pacing slows down significantly, making the experience feel dragged and cluttered. By the final act, the film struggles to maintain coherence, leaving the audience more puzzled than satisfied. Overall, The Great Flood starts well but fails to deliver a clear, well-structured payoff.
    5NavigatorX1

    In the age of AI why not ride the wave!

    I read some reviews that talked about the fact that most people reviewed this film negatively because in this film there is a clear change of direction that they didn't like! Ok I didn't like the film for this reason but if the film is well made I still consider it a good film, in this case there is a really interesting idea in the film but really difficult to swallow, why? In this film we're not talking about things that could happen in tens of years or hundreds of years, here we're talking about things that maybe, and I say maybe, will happen in thousands of years and I'm not just talking about AI but I'm also talking about the technical construction sector, in my opinion they've gone too far, here they're talking about an incredible technology that is truly light years away in the present day, this is really difficult for me to swallow perhaps to watch this film you shouldn't be too pretentious because nothing about AI is in the film that rides the wave! What I wonder is what need was there to include this tear-jerking story between mother and son that didn't tear me away, perhaps theirs was just one of many different stories that ultimately have no purpose? To make humanity better, to make us better? Well I don't know, maybe only the person who wrote it knows.
    5Sjamanen

    Overambitious

    I went into this expecting very little. Just a decent disaster movie that does just enough to entertain me.

    It starts out pretty intense, where we follow this mom and her son trying to survive «the great flood». Then it does a 180 and turns into a sci-fi movie.

    I am assuming pretty much the entire movie is shot in a «green screen stage/studio». The VFX is impressive for its (i would hope) low budget. But not impressive enough to be totally immersive.

    Its a good effort, but I fear the movie is overambitious yet somehow lacking in plot and overall execution.

    The lead character, An-na, is the only thing keeping it from being a total disaster.

    5/10.
    6stevewastedisposal

    Ive waited ages for this film

    I expected great things , and was so excited to see it. I found it abit confusing at times it disappointed me , wasn't awful but wasn't great either , real shame . Good acting skills.

    Started promising.

    Worth watching once at least.

    And now I am just adding characters as my review is too short lol.
    8MuhammadD-138

    amazing cinematography

    I am not into korean movies or series but this one caught my attention. I was shocked to seing this movie got a very low rating but by reading the reviews i understand that some people hate the characters because of its behavior. While that might not be the actors fault they did a really great acting on the characters they supposed to act. What im shocked most is the editing of the flood and all of the VFX they have put into making this movie. I mean from the water physics, explosion and also IN SPACE. All of them look surreal and not many movie production can do that. The story might be a 6/10 for me but the editing really bumps up my points for this movie.

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    Related interests

    Choi Min-sik in Old Boy (2003)
    Korean
    Helen Hunt and Bill Paxton in Twister (1996)
    Disaster
    Bruce Willis and Taniel in Piège de cristal (1988)
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    Still frame
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    Naomie Harris, Mahershala Ali, Janelle Monáe, André Holland, Herman Caheej McGloun, Edson Jean, Alex R. Hibbert, and Tanisha Cidel in Moonlight (2016)
    Drama
    James Earl Jones and David Prowse in L'Empire contre-attaque (1980)
    Sci-Fi

    Storyline

    Edit

    Did you know

    Edit
    • Trivia
      Director Kim Byung Woo said, "Water is called a 'water demon' in disasters, but it is also the source of life. I also thought that if human emotions were expressed visually, they might take the form of a massive, surging wave."

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    Details

    Edit
    • Release date
      • December 19, 2025 (South Korea)
    • Country of origin
      • South Korea
    • Official sites
      • hancinema
      • Netflix Site
    • Language
      • Korean
    • Also known as
      • The Great Flood
    • Filming locations
      • Seoul, South Korea(location)
    • Production company
      • Hwansang Studio
    • See more company credits at IMDbPro

    Tech specs

    Edit
    • Runtime
      • 1h 49m(109 min)
    • Color
      • Color
    • Sound mix
      • Dolby Digital
    • Aspect ratio
      • 1.85 : 1

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