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The Great Flood

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

6.0
2025
1h 47m
Science FictionAdventureDrama
Director: Kim Byung-woo
Watch on Netflix

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.

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Reviews

AI-generated review
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. 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.

Kim Da-mi carries the film through that pivot. She plays An-na, an AI researcher who wakes to find the apocalypse already at the door, and there is no vanity in the performance at all. Everything runs through the body. Kim was reportedly hit with fierce, Pacific-scale water currents during production, and you can see it in the way she moves: hunched shoulders, teeth-chattering exhaustion, the constant labor of dragging herself and her son upward. In the scene where a massive wave tears them apart across several floors, her panic feels refreshingly ugly and immediate. Her eyes go wide. She fights the current with frantic, graceless force. It doesn't register as choreography. It registers as survival.

A massive wave crashing into the apartment complex

Park Hae-soo enters that drenched chaos as Hee-jo, the operative assigned to get her out, and he brings exactly the kind of weight the film needs. Park has turned up everywhere on Netflix lately, from *Squid Game* to *Narco-Saints*, and he has a way of making competence feel vaguely threatening. He doesn't stride like a movie hero; he moves with a stiff, almost bureaucratic efficiency through the flooding corridors. Trust never comes easy with him, which fits a script determined to keep his motives partially obscured. As the second half gets wilder with talk of synthetic bodies and transferred consciousness, the connection between Hee-jo and An-na keeps things grounded. Their shivering, soaked physical presence reminds you that all this theorizing still comes back to vulnerable flesh.

Hee-jo navigating the dark, flooded corridors

Yes, the movie is a bit of a mess. The dialogue can knot itself up trying to explain the end-of-world mechanics, and the child is as irritating as frightened six-year-olds often are on screen. But I kept finding reasons to stick with it. A fascinating misfire is often more memorable than a perfectly calibrated machine. *The Great Flood* leaves you drenched, slightly bewildered, and a little cold to the bone—yet it leaves something behind.