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Movie poster for The Great Flood (2025)

The Great Flood

“The last day on earth. The one choice for survival.”

2025
1h 47m
R · Korean
Director: Kim Byung-woo
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Overview

When a raging flood traps a researcher and her young son, a call to a crucial mission puts their escape — and the future of humanity — on the line.

Cast

12 people

Reviews

3 min read

The Water Will Come for Us All

What keeps sticking with me is the stairwell. Not the huge CGI walls of water that sometimes dominate The Great Flood, but the ordinary apartment stairs turning into a trap as filthy water keeps climbing. latestnetflix.com's view is that Kim Byung-woo has a talent for pinning people in impossible spaces.

He did it with a news anchor in The Terror Live and with mercenaries in PMC: The Bunker. Here he does it to a mother and her little boy. At first the movie looks like a straightforward survival thriller—a soaked, desperate scramble toward higher ground—and for about half an hour, that's exactly what it is.

The tension is simple and effective.

An-na and Ja-in looking out at the flooded city

Then Kim yanks the floor away. What begins as disaster cinema swerves into a dense sci-fi construction full of asteroid fallout, United Nations maneuvering, and transhumanist ideas. I can't honestly say the turn works cleanly.

Whether you find that genre lurch exciting or exasperating will depend on how much exposition you're willing to tolerate, but safe is the one thing this movie refuses to be. Kim uses the immediate terror of drowning as bait, then starts asking much bigger questions about what survival even means when the world is ending. Phil Hoad at The Guardian captured that gear shift neatly, writing that the film "swerves into sinister sci-fi territory" as soon as it becomes clear how important this particular mother is to humanity's future.

Audience Opinions

Audience 5.0/10
"A visually striking flood thriller that starts tense and focused before a divisive sci-fi twist turns it into an ambitious but confusing genre mash-up."

Early scenes of a mother and child trying to reach the roof as their apartment complex floods work well, with convincing water effects, strong set pieces, and committed lead performances. Once the story pivots to simulations, artificial bodies, and origin-of-humanity ideas, the plotting turns muddled and overreaching; some admire the risk-taking, but many are bored, irritated, or feel misled by the disaster-movie marketing. Opinion splits sharply between fans of the risky, emotional sci-fi direction and those who wish it had stayed a straightforward survival story.

What viewers praise
  • Convincing disaster imagery Rising water, underwater shots, and tsunami waves look threatening and immersive, and the tank work and VFX are the film’s biggest achievement.
  • Tense confined survival The first half, mostly inside a flooding apartment building, delivers gripping, claustrophobic escape sequences with high stakes and tight pacing.
  • Standout lead acting Kim Da-mi carries both the physical intensity and the emotional weight, with Park Hae-soo as dependable support.
  • Ambitious genre swing The mid-film shift into heavier sci-fi, time-loop-style repetitions, and questions about consciousness and maternal instinct rewards viewers who like risky, concept-driven stories.
  • Stylish execution Even detractors acknowledge a polished visual style and some impressive long takes that keep the film interesting to look at.
Common complaints
  • Confusing narrative shift The abrupt move from grounded survival into layered simulations and AI concepts is convoluted, and many never fully understood what was happening.
  • Disappointing for disaster fans If you came for a pure flood movie, the switch from large-scale catastrophe to a twisty sci-fi plot sidelines the very premise you wanted.
  • Uneven emotional impact Despite the mother–child focus, the handling of grief, maternal instinct, and sacrifice strikes some as forced or manipulative rather than moving.
  • Irritating child characterization The son is whiny and more obstacle than sympathetic figure, so key tension scenes grate instead of affecting.
  • Plot holes and implausibility Easy stairwell access, convenient phone signal in a submerged city, and the logic behind the experiment and ‘new humanity’ plan break immersion and invite ridicule.
Recommended for
Sci-fi disaster hybrid fans Korean genre cinema followers Kim Da-mi admirers High-concept apocalyptic stories Ambitious but flawed films Visual effects and set-piece lovers

Full Plot (Spoilers)

Spoiler warning

This section contains the full plot, including major story reveals. Overview above stays spoiler-free.

Buzz & Rumors

Public reports

THE GREAT FLOOD: Stock Crashes, Soaked Stars & Viral Theories — The Messy Story Behind 2025’s Wildest K-Movie

When Netflix promised a Korean disaster blockbuster, fans expected tsunamis and tears — not stock-market carnage, six months of underwater torture for the lead actress, and fan theories that require a PhD in sci‑fi. latestnetflix.com's take is that Grab a life jacket; the real-world drama around The Great Flood is just as chaotic as the movie.


Scandals & Controversies: When a Flood Sinks a VFX Company

  • The loudest drama isn’t on set — it’s on the stock exchange. Korean VFX company M83, which handled the movie’s CG deluge, saw its share price collapse after The Great Flood hit Netflix. By December 27, the stock had crashed to 8,950 won, its lowest level since listing, down nearly 44% from its IPO price of 16,000 won. - Korean outlets reported that some investors in M83 were facing “100% losses,” turning what was supposed to be a prestige Netflix project into a financial horror story. - The real sting? Industry analysts had hyped the film as M83’s big breakout, only for it to become a textbook example of how one overhyped streaming blockbuster can torpedo a company’s market value.

Marketing Meltdown: “We Ordered Disaster, Got Philosophy”

  • Korean audiences didn’t just dislike the film — they felt swindled. Trailers and posters sold The Great Flood as a straight-up disaster survival thriller: high-rise drowning, rooftop chases, global cataclysm. - Once viewers pressed play, the movie swerved hard into AI, simulation theory and consciousness uploading. Cue outrage. Facebook threads and Reddit posts filled up with complaints from people who “found it hard to follow” and weren’t prepared for a head-trip sci‑fi puzzle. - A viral Reddit discussion titled “Why is the Great Flood plot so confusing!!” turned into a communal therapy session, with fans trading charts, theories and existential dread just to make sense of the third act.

On-Set Drama: Six Months Underwater & Emotional Exhaustion

  • Behind the scenes, this flood was brutal. Multiple BTS pieces and social media posts highlight how much of the shoot involved real water and practical rigs, with lead actress Kim Da-mi reportedly “soaked for nearly six months” due to extensive underwater and wet-set filming. - Park Hae-soo revealed that some scenes required him to keep his eyes open underwater, describing how perception becomes completely different when submerged — not exactly a spa day at work. - Kim Da-mi openly admitted the physical and emotional toll, saying there were many days she was alone on set and would “wait for [Park Hae-soo] to arrive,” adding that just seeing him lifted her spirits when she was exhausted. It’s less “cast feud” and more “trauma bonding in a water tank.”

Romance Rumors & Chemistry Panic

  • Officially, there’s no confirmed romance between Kim Da-mi and Park Hae-soo. Unofficially? TikTok has decided they’re the lead couple of the apocalypse. - Edits titled things like “Still Thinking About Their Chemistry a Year Later” keep racking up views, zooming in on shy smiles and soft looks from press events and behind-the-scenes clips. Fans are convinced “something” was there, though nothing has been proven. - Meanwhile, separate chatter on Instagram and fan spaces points to Kim Da-mi being in a relationship with The Call director Lee Chung-hyun — again, unconfirmed, but repeated enough in fandom corners to have its own mini-mythology. - Verdict: no Dispatch exposé, but plenty of slow-motion eye contact for the shippers.

Fan Theories & Fandom Chaos: The Movie That Launched a Thousand Explainers

  • Because the plot spirals from flood survival into brain-bending sci‑fi, fans did what fans do best: built enormous conspiracy boards. - One viral TikTok and Reddit combo frames the story as a giant AI training simulation — arguing that nearly everything after the midpoint is an artificial scenario designed to teach an AI about a mother’s love, with An-na and Ja-in’s consciousnesses ultimately living on in synthetic bodies. - Time-loop truthers point to repeated imagery and subtle changes in An-na’s behavior, claiming each “run” of the flood lets the AI remember past iterations and adapt. Entire TikTok playlists are now dedicated to “Theories on The Korean Movie The Great Flood” and decoding the ending. - Other creators go full galaxy-brain, connecting the film to biblical flood myths and apocalyptic prophecy — pure speculation, but undeniably entertaining.

The Kid Who Broke the Internet (and Some Viewers’ Patience)

  • Poor Ja-in. The child at the heart of the story became one of the most divisive elements in the fandom. - A widely shared YouTube video calling the film a “HISTORIC FLOP” went so far as to label the kid “the real antagonist,” arguing his constant demands and emotional outbursts derailed the tension rather than enhancing it. - TikTok piled on, with trending clips under tags like “The Most Annoying Kid in The Great Flood,” featuring viewers confessing they almost turned the movie off because of the character. - It’s harsh, especially for a young actor who clearly gave it his all — but the internet shows no mercy, even in the middle of the world’s end.

The Messy Legacy

In the end, The Great Flood pulled off the rare hat trick:

  • Global hit for Netflix, topping non-English charts in dozens of countries,
  • Domestic punching bag accused of bait-and-switch marketing, and
  • Financial sinkhole for its VFX partner, with investors watching their money wash away like set dressing.

No juicy on-set fistfights, no smoking-gun dating scandal — just a soaked cast, furious shareholders, confused audiences, and a fandom still arguing about what the movie even was. For a film about the end of the world, its real-world drama is impressively built to last.

Entertainment rumors and trivia aggregated from public reporting. Treat speculation as unverified unless a cited source confirms it.

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