The Great Flood Cast 2025 – is a South Korean science-fiction disaster movie written and directed by Kim Byung-woo. The film stars Kim Da-mi and Park Hae-soo in lead roles. The story is about people trapped inside a flooded apartment building after a massive disaster. As water rises everywhere, they struggle to survive and protect what is left of humanity. The film shows fear, hope, and the fight to live during what may be the last days of the world.
The Great Flood mixes science fiction, disaster, and emotional drama, making it a tense and powerful survival story. Below you will find complete details only on castadda.com.
The Great Flood Cast 2025: Full Cast & Crew List
Below is the expected cast list of The Great Flood 2025 film with actor and role details.
| Name | Character / Role |
|---|---|
| Byung‑woo Kim | Director / Writer |
| Moisés Velasco | Adaptation: Spanish Latin American Version |
| Kim Da‑mi | Koo An Na |
| Park Hae‑soo | Hee‑jo |
| Kwon Eun‑sung | Ja In (An Na’s son) |
| Yuna | Lee Ji Su |
| Kim Min‑Gwi | Mi Jeong (Looter) |
| Ahn Hyun Ho | Apt. 1503 Resident |
| Kim Kyu‑na | Apt. 304 Resident |
| Jung Min‑joon | Apt. 304 Resident |
| Park Mi‑hyeon | An Na’s Mother |
| Lee Dong‑chan | Apt. 2002 Resident |
| Lee Hak‑joo | Sin Ga Won |
| Park Byeong‑eun | Lee Hwi So |
| Jeon Hye‑jin | Im Hyeon Mo (An Na’s Superior) |
| Park Ji Won | Deaconess |
| Jo Seung‑yeon | Apt. 702 Resident |
| Kim Su‑Kyung | Apt. 304 Resident |
| Seo Suk‑gyu | Apt. 304 Resident (as Seo Suk‑Kyu) |
| Jung Hyun Chul | Apartment Resident |
| Lee Jae‑Woong | Apartment Resident |
| Jung Shi Hoon | Apartment Resident |
| Erin Choi | Lee Ji Su (voice) |
| Chun‑Kyoung Kim | Executive Producer |
| Post Published By | castadda.com |
Above is the confirmed Cast & Crew list of The Great Flood.
The Great Flood Movie Story
Anna, an AI researcher who recently lost her husband, wakes up to find her apartment flooding. She climbs the stairs of her 30‑floor building with her 6‑year‑old son Jain, trying to escape with other residents. The United Nations calls her, saying agents will rescue them by helicopter.
Anna almost drowns in a huge wave but is saved by an agent named Heejo. He tells her the UN knew for years that an asteroid would hit the North Pole, causing massive floods. Instead of warning people, they secretly built a space station and worked on new human bodies and minds. Anna’s company was part of this project.
Another wave sweeps Anna into the water. She swims back and hears a girl trapped in an elevator but can’t save her before the water rises. Later, Anna, Jain, and Heejo reach the roof, where a SWAT team takes Jain and extracts his mind with a machine. It’s revealed Jain was not born naturally—he was an artificial child created from Anna’s AI software, which she had agreed to adopt to improve the program.
The SWAT leader tells Anna only she and Jain’s consciousness disk can board the helicopter, while everyone else must stay behind. Heejo is killed for protesting. Anna is sent in a rocket to the space station, but the ship is hit by debris, and it seems everyone dies.
Anna wakes up again in her apartment as flood water rises. She climbs the stairs with her son Jain, but a wave separates them. While searching, she is hit by a floating car and nearly dies, but Heejo revives her. Together, they search the building for Jain.
Anna tries to save a girl named Jisoo from an elevator and drowns, but in a new timeline she manages to open the doors with a broomstick. Jisoo explains that Heejo was kidnapped by looters. Anna fights the looters and is almost killed, but Heejo rescues her using Jisoo’s apartment key. Jisoo chooses to stay behind with her grandparents.
Later, Heejo orders SWAT agents to take Anna to a helicopter, but Anna remembers past timelines and warns him the agents will kill him. She and Heejo fight through the SWAT team. On her phone, Anna finds thousands of paintings from Jain, showing different timelines, including the first one where she left him behind.
Finally, Anna reunites with Jain on the roof. As a giant wave crashes down, they drown together.
Why The Great Flood Is a Powerful Disaster Film
- Large-scale flood scenes
- Emotional survival stories
- Strong rescue and emergency moments
- Focus on human courage and hope
The Great Flood Release Date Update
The movie had its world premiere at the 30th Busan International Film Festival on September 18, 2025, in the Korean Cinema Today – Special Premiere section. After the festival, it was released worldwide on Netflix on December 19, 2025.
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The Great Flood Trailer Update
Watch the official trailer of The Great Flood Released by Netflix.
Where to Watch The Great Flood 2025 Film
If you want to watch The Great Flood, it’s already streaming on Netflix worldwide.
- Audio: Korean (original), English, Spanish, French, German (with audio description)
- Subtitles: English, Spanish, French, German, Korean, and more
- Download: Available for offline viewing on Netflix app
About The Great Flood 2025 Film
The Great Flood is a South Korean science‑fiction disaster film directed by Kim Byung‑woo. It follows Anna (Kim Da‑mi), an AI researcher, and her young son Jain as they struggle to survive inside a flooded apartment building after a massive asteroid impact triggers global flooding. The film blends disaster spectacle with emotional survival drama and sci‑fi twists.
FAQs: The Great Flood 2025 Film
Q: Who directed and produced The Great Flood?
Ans: The film is written and directed by Kim Byung‑woo, with Chun‑Kyoung Kim serving as executive producer. Moisés Velasco handled adaptation for the Spanish Latin American version.
Q: Is The Great Flood based on real events?
Ans: No, it is a fictional story. However, it incorporates realistic disaster elements like rising floodwaters, survival struggles, and human courage, combined with sci‑fi themes such as AI research and alternate timelines.
Q: When did The Great Flood release?
Ans:
World Premiere: September 18, 2025, at the 30th Busan International Film Festival (Korean Cinema Today – Special Premiere section)
Global Release: December 19, 2025, streaming worldwide on Netflix
Q: Where can I watch The Great Flood?
Ans: The film is available exclusively on Netflix worldwide. It supports multiple audio tracks (Korean, English, Spanish, French, German) and subtitles in several languages. Offline downloads are also available via the Netflix app.
