Humanity’s final days get the creepiest and most claustrophobic atmosphere in The Great Flood on Netflix. Survival, sacrifice, and sorrow are deluged in mass extinction, leading to tough moral choices, and of course, the timely dread of AI.

Netflix's latest Korean sci-fi disaster drop has been gaining popularity among viewers. The film is set in a world devastated by floods and an uncertain future, raising the stakes of the thriller to the highest level.

With its global streaming release, Netflix continues to curate international cinematic gems that are too good to miss out on due to geographical barriers.

The Great Flood is a science fiction disaster film from South Korea, directed and co-written by Kim Byung-woo, famed for The Terror Live. The gripping thriller first screened in the Korean Cinema Today - Special Premiere section at the 30th Busan International Film Festival on September 18, 2025. Netflix acquired it as a global original in 2023, while its production began in July 2022 at Hwansang Studios. 

Kim Da-mi (Itaewon Class, Our Beloved Summer) delivers a strong leading performance, showcasing the emotive nuances of parents' resilience in a very stressful situation, in this case, humanity being on the brink of extinction. Kim plays Gu An-na, an AI researcher trapped in an apartment building with rising waters and a son to save.

Park Hae-soo, famous for his role in the hit series Squid Game, Money Heist: Korea, and Prison Playbook, stars opposite Kim Da-mi as Son Hee-jo. Son offers to rescue Gu An-na, but his motives make the conflict harder and the stakes higher. 

Kwon Eun-seong of Netflix's Typhoon Family stars as Shin Za-in, the son of Kim Da-mi's Gu An-na. Meanwhile, Jeon Hye-jin, Kang Bin, Jeon Yu-na, Park Byung-eun, and Lee Hak-joo round out the cast. Each character contributes to the survival story by showing different perspectives and personal struggles as the flood grows more serious. 

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Never make assumptions about Netflix's South Korean thrillers because this is not a typical global-warming doomsday kind of storytelling.

Terrifying natural disasters wiping out humanity could only happen in motion pictures, right? Well, clutch the pearls because The Great Flood charges forth with a cataclysmic deluge, traumatizing and terrorizing a mother in Seoul who is forced to take on a daring mission.

The plot pivots on a woman with dwindling hope and no escape fighting to save a child. But in this haunting new disaster thriller, there are more,unpredictable layers.

Unbeknownst to her, while Gu An-na battles the flood and her traumas to protect her son, she gets set up to protect all of humanity. The AI researcher and single mother is thus faced with a more significant task, which can affect humankind’s future. 

Gu An-na battles looters and panicked neighbors when she is separated from her son amidst the liquid chaos. Rescued by the enigmatic Son Hee-jo, she must navigate his true motives while seeking to reunite with her child. 

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So, where to watch The Great Flood in December 2025?

The Great Flood is now home to Netflix streaming for worldwide audiences. It has been released on Netflix on December 19, 2025, making it one of the platform’s largest international titles of the year. 

This film packs in heart and pain in the face of overwhelming odds and defies the stereotype of disaster movies. What drives the plot to a homerun is its haunting realism and technical brilliance that elevate the terrifying streaming experience.

In around 108 minutes, director Kim Byung-woo creates a world using tense visuals and, at the same time depicting the terrifying rise of floodwaters and the frantic fight for survival. The production design effectively draws an underwater apartment world, while the sound and visual effects increase the tension. 

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