Netflix’s The Great Flood starts as a survival thriller but ends up as a layered sci-fi drama. Starring Kim Dae-mi as An-na and Park Hae-soo as Hee-jo, the film gradually reveals that the disaster is only one part of a much larger experiment. The ending raises an important question: did An-Na actually survive the flood, or had humanity already reached its end before the final scene?
Explaining the End of the Great Flood: What’s Real and What’s Not?
First, the film shows a sudden global flood caused by an asteroid impact in Antarctica. An-na struggles to escape a submerged apartment building with Jae-in, the child she has raised as her own son. This part of the story is real. The flood is really happening, and governments already know that the Earth cannot be saved.
The twist comes after An-na reaches the rooftop and is taken away by a research team. From this point, the film shifts from physical survival to psychological examination. An-Na works for a secret organization that is trying to preserve humanity through artificial intelligence. Ja-in is revealed to be an advanced AI, not a biological child.
This is why simulation is more important than flooding
An-Na is taken to a space laboratory, where she learns about the Emotion Engine, a system designed to give AI real emotional depth. Instead of programming the emotion, An-na chooses to experience it herself.
She enters a simulation that forces her to experience the flood again and again. Every time she fails to save Ja-in, the day is reset. First, he lacks significant memories. Over several episodes, she begins to remember her past, her loss, and her promise to never leave Ja-in.
This experiment is not about saving the world. It’s about proving that love, memory and sacrifice can exist inside artificial systems.
In the end, An-na remembers everything. She searches separately, confronts the guards, and finds Jae-in hiding where he always goes when he gets scared. This completes the test. The simulation ends, and An-na and Ja-in are seen together on a spaceship looking towards Earth.
The film never confirms whether An-Na is still human or something created from her memories. That ambiguity is intentional. The Great Flood shows that humanity can survive through emotions, even if the human body cannot survive.
The ending makes one thing clear. Existence without emotion is meaningless. Whether An-Na survived the flood or not is less important than what was left with her.
