The Great Flood: Cast, Plot, Where to Stream the Korean Disaster Movie - Netflix Tudum

  • Deep Dive

    Everything to Know About the Korean Sci-Fi Flick The Great Flood

    Can a mother’s love save humanity?

    By Krutika Mallikarjuna
    Dec. 20, 2025

When a cataclysmic, worldwide flood threatens to wipe out humanity, a mother in Seoul defies all odds as she fights her way to the top of a high-rise building with her young son in tow, embarking on a daring mission that could save her child and — unbeknownst to her — all of humanity. Directed by award-winner Kim Byung-woo (The Terror Live), the South Korean disaster thriller The Great Flood stars Kim Da-mi (Itaewon Class) and Park Hae-soo (Squid Game). 

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When will The Great Flood be released?

Stream it now.

Where can I find the trailer for The Great Flood?

Check it out at the top of this page. 

Kim Da-mi, as Koo An-na, and Park Hae-soo, as Son Hee-jo, fight through the crowd in ‘The Great Flood.’

Who’s in the cast of The Great Flood?

Kim Da-mi, as Koo An-na, runs through rising floodwaters in her apartment in ‘The Great Flood.’

What happens in The Great Flood?

When a massive tsunami threatens to wipe out the city of Seoul, citizens have nowhere to run: This natural disaster is a worldwide extinction event. However, An-na (Kim), a researcher and single mother, is only thinking of her young son, Za-in (Kwon). As they brave the chaos, An-na realizes quickly there’s just one place to go as water floods in through the windows of her third-story apartment: up. 

An-na fights past panicked neighbors, fends off looters, and more — only to be separated from her son. When she’s rescued by the curt and mysterious Hee-jo (Park), the two set off to find her son. But An-na soon realizes Hee-jo’s motives for offering help may not be as altruistic as they seem — and that the fates of all three of them may rest in her hands. 

Where does The Great Flood take place?

The Great Flood is set in Seoul in the near future.

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