MLWBD: The Great Flood review

Korean cinema has, over the past two decades, demonstrated a remarkable fluency in bending genre to its will. From zombie thrillers doubling as class allegories to monster movies that double as political satire, filmmakers have repeatedly used spectacle as a Trojan horse for darker, more introspective ideas. Kim Byung-woo’s sixth feature, The Great Flood, follows that tradition — at least initially. What begins as a fairly conventional apocalypse movie about a catastrophic deluge in Seoul gradually mutates into something stranger, more philosophical, and arguably more troubling: a piece of sci-fi that appears less concerned with humanity’s survival than with the future of storytelling itself.

Streaming on Netflix from 19 December, The Great Flood is chimeric, uneven and often brittle in its narrative construction. Yet it remains consistently watchable, sometimes gripping, and frequently thought-provoking. Its pleasures are not always the ones it seems to be offering, and its most unsettling ideas emerge only once the film has apparently changed genre beneath our feet.

An apocalypse begins at home

Kim opens The Great Flood in recognisable disaster-movie territory. Seoul is being inundated by relentless rain, the water rising with alarming speed. Sirens blare, emergency broadcasts crackle, and residents of a towering apartment block scramble for higher ground. The early scenes are efficiently staged, leaning into claustrophobia rather than large-scale destruction. This is not a city flattened in one grand CGI gesture, but a vertical nightmare, where survival means climbing — and climbing fast.

At the centre of the chaos is An-na (Kim Da-mi), a reserved, emotionally contained woman navigating the crisis with her six-year-old son, Ja-in (Kwon Eun-seong). Ja-in is obsessed with swimming, and in an unsettlingly innocent twist, his dreams appear to be coming true as water floods their apartment. The film smartly uses the child’s perspective to undercut the expected terror of the situation; for Ja-in, the apocalypse initially feels like a game.

Kim Da-mi, best known internationally for roles that blend emotional intensity with quiet intelligence, plays An-na as a figure of controlled urgency. She is not overtly heroic in these early moments, but practical, focused, and slightly distant — a mother prioritising logistics over emotional reassurance. As water fills stairwells and elevators fail, An-na and Ja-in join the human tide pushing upward through the building’s emergency exits.

At this stage, The Great Flood flirts with familiar socio-political subtext. The image of residents fighting their way up a 30-storey tower carries echoes of class stratification: who lives higher, who escapes first, who is left behind. It seems, briefly, as though Kim might be setting up a vertical allegory in the tradition of Snowpiercer or Parasite, using physical elevation as a metaphor for social hierarchy.

But the film has other ideas.

A rescue — and a revelation

The narrative shifts decisively with the arrival of Hee-jo (Park Hae-soo), a corporate security officer who intercepts An-na and delivers a bombshell explanation. The floods, he tells her, are not merely a freak weather event but the result of an asteroid impact in Antarctica, triggering catastrophic climate effects that will soon end civilisation as we know it.

More importantly, An-na is not just another civilian. She is a second-ranking science officer involved in a secret United Nations research project — one so critical that a helicopter has been dispatched to evacuate her and Ja-in specifically. Humanity’s future, it seems, depends on her work.

This revelation abruptly reorients the film. What appeared to be a grounded survival story becomes something closer to a techno-thriller, with An-na reclassified as an indispensable asset rather than an ordinary mother. The shift is handled briskly, almost brusquely, as if Kim is impatient to move on from the disaster-movie framework he has established.

Reaching the rooftop — and then, intriguingly, continuing even further upwards — changes not only the characters’ physical position but the audience’s understanding of the story itself. The exact nature of An-na’s work is gradually revealed, and with it comes a descent into a conceptual rabbit hole that pulls The Great Flood firmly into sinister sci-fi territory.

From disaster to recursion

Once the film makes its genre swerve, Kim Byung-woo’s influences become more apparent. There are clear echoes of Edge of Tomorrow in the idea of recursive experience and iterative correction. The psychological labyrinths of Charlie Kaufman hover in the background, particularly in the film’s fascination with self-awareness and emotional calibration. And with its imagery of looming mega-tsunamis and its solemn, mournful tone, The Great Flood also invites comparison with Christopher Nolan’s Interstellar.

Yet Kim is not simply borrowing from these sources; he is repurposing them. The film’s sci-fi turn reveals that An-na’s work is tied to a system capable of replaying, refining, and “correcting” human responses under extreme conditions. As the narrative loops and reframes earlier moments, An-na is presented with opportunities to adjust her behaviour — to be less selfish, more compassionate, more attentive to the suffering of others.

She encounters a girl trapped in a lift. A woman in labour. Strangers whose survival hinges on her choices. Each time, the film subtly suggests that An-na’s emotional reactions are being tested, measured, and optimised.

This is where The Great Flood begins to feel less like a story about saving humanity, and more like a meditation on how stories themselves are engineered.

Algorithmic empathy

The most provocative idea lurking within The Great Flood is that emotional responses can be calibrated — that empathy, sacrifice and moral decision-making can be fine-tuned through repetition. The film’s recursive structure implies a future in which narrative itself becomes a training tool, shaping not just characters but audiences.

As An-na “corrects” her initial reactions, the implication is not simply that she is growing as a person, but that growth is being guided, nudged, perhaps even enforced by an unseen system. This is not moral development through lived experience, but optimisation through iteration.

Viewed through this lens, The Great Flood starts to resemble an apologia for algorithmic entertainment. The disaster imagery — often familiar, sometimes recycled — feels less like an attempt to overwhelm than to establish a recognisable emotional baseline. The film seems to ask: what if stories could be endlessly adjusted until they produced the desired emotional outcome?

That this is a Netflix Original only sharpens the unease. The platform’s reliance on data-driven content decisions gives Kim’s film an oddly reflexive quality, as though it is both critiquing and embodying the logic of algorithmic storytelling. Are we watching a warning, or a prototype?

Brittle storytelling, deliberate or not

For all its conceptual ambition, The Great Flood struggles with execution. The storytelling is often brittle, with transitions that feel abrupt and character motivations that are underexplained. The film notably fails to designate a clear antagonist. There is no villain in the traditional sense — no corporate mastermind or rogue scientist to embody moral opposition.

This absence may be intentional, reinforcing the idea that the system itself is the problem. Or it may simply reflect narrative indecision. Either way, it leaves the film without a focal point for its tension, diffusing conflict across abstract ideas rather than concrete confrontations.

Park Hae-soo’s Hee-jo, who initially appears poised to fill an antagonistic role, remains frustratingly opaque. Is he a guardian, a handler, a bureaucrat following orders without question? The film never quite decides, and his character drifts through the story as a functional presence rather than a dramatic one.

Yet these weaknesses also underscore a curious contradiction at the heart of The Great Flood. For a film seemingly invested in the idea of optimisation, it is conspicuously imperfect. Its narrative loops are messy. Its emotional beats do not always land. Human fallibility, it seems, is alive and well — unless, of course, this reluctance to condemn the “optimised future” means Kim is already complicit to the nth degree.

Performances anchored in intimacy

What keeps The Great Flood engaging, despite its structural issues, are the performances at its core. Kim Da-mi carries the film with a restrained intensity that grounds even the most abstract developments. Her portrayal of An-na balances intellect and emotional reserve, making her gradual shifts in behaviour feel earned rather than mechanical — even as the film suggests they may be exactly that.

Kwon Eun-seong, as Ja-in, provides a crucial emotional anchor. His presence humanises the film’s high-concept ideas, and the mother-child dynamic remains compelling even when the plot veers into abstraction. The question of whether An-na’s decisions are motivated by maternal instinct or systemic programming becomes one of the film’s most quietly disturbing undercurrents.

Enjoyment amid unease

For all its cerebral ambition, The Great Flood does not entirely abandon the pleasures of spectacle. The flood sequences are effectively staged, with a convincing sense of scale and urgency. The vertical geography of the apartment block remains visually and thematically potent, even as the film moves beyond it.

There is enjoyment to be had here, particularly for viewers willing to embrace ambiguity and tonal shifts. Kim Byung-woo may not fully control his material, but he is undeniably curious, and that curiosity propels the film forward even when its narrative coherence falters.

A flood of ideas, not all contained

Ultimately, The Great Flood is a film that feels like it is thinking out loud. It begins as an apocalypse movie, flirts with social allegory, then plunges headlong into speculative sci-fi with unsettling implications about empathy, agency and the future of entertainment.

It does not always succeed on its own terms. Its storytelling is uneven, its characters sometimes underdeveloped, and its ambitions occasionally outstrip its grasp. But it is rarely dull, and often intriguing in precisely the moments where it seems to lose control.

Like the flood it depicts, Kim Byung-woo’s film overwhelms, recedes, and leaves behind strange debris — ideas that linger long after the immediate spectacle has passed. In an era of increasingly optimised, data-driven cinema, The Great Flood may be less a warning siren than a mirror held up to the industry itself. Whether that makes it prophetic or complicit is a question the film pointedly refuses to answer.